fp updates #1257
fp updates #1257
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4 pages updated for multithreaded cannon, 64-bit architecture: * fp-components * op-challenger explainer * cannon FPVM * mips.sol
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📝 WalkthroughWalkthroughThis pull request introduces significant documentation updates across multiple files related to Optimism's Fault Proof System, focusing on the Cannon Fault Proof Virtual Machine (FPVM). The changes primarily revolve around upgrading the system to support 64-bit MIPS emulation, introducing multithreading capabilities, and enhancing the overall technical documentation. Key modifications include updating the architectural description of Cannon, expanding on memory management, and clarifying the interactions between various components like op-challenger and op-program. The documentation now provides more detailed insights into the system's capabilities, including support for larger memory spaces, improved state transitions, and the introduction of new proof system implementations like Asterisc and Kona. Possibly related PRs
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Actionable comments posted: 1
🧹 Nitpick comments (8)
words.txt (1)
107-107: Remove apostrophe from "EVM's" for consistency.The term "EVM's" contains an apostrophe which is inconsistent with the style of other terms in the dictionary. Consider using "EVM" instead.
-EVM's +EVM🧰 Tools
🪛 LanguageTool
[duplication] ~107-~107: Möglicher Tippfehler: ein Wort wird wiederholt
Context: ...erbase Ethernow ETHSTATS ethstats EVM's EVMTIMEOUT evmtimeout executability exfiltrate EXITWHENSYNCED...(GERMAN_WORD_REPEAT_RULE)
pages/stack/fault-proofs/mips.mdx (2)
18-21: Add Oxford comma in list items.For consistency and clarity, add Oxford commas in the list.
- * Offchain component executes MIPS instructions across multiple threads for disputed L2 state transitions + * Offchain component executes MIPS instructions across multiple threads for disputed L2 state transitions, - * Onchain component (MIPS.sol) executes single instructions with provided state and memory proofs + * Onchain component (MIPS.sol) executes single instructions with provided state and memory proofs, - * Both maintain deterministic execution through careful thread state management + * Both maintain deterministic execution through careful thread state management.
45-45: Use sentence case in header.According to the coding guidelines, H1, H2, and H3 headers should use sentence case.
-## Thread management and `PreimageOracle` integration +## Thread management and preimage oracle integrationpages/stack/fault-proofs/challenger.mdx (2)
35-42: Fix mermaid diagram indentation.The indentation in the mermaid diagram is inconsistent. Align the subgraph elements for better readability.
subgraph VM[64-bit MIPS VM] - MT[Multithreaded Execution] -->|Manages| TS[Thread States] - MT -->|Enables| GC[Asynchronous GC] - MT -->|Controls| CS[Context Switching] + MT[Multithreaded Execution] -->|Manages| TS[Thread States] + MT -->|Enables| GC[Asynchronous GC] + MT -->|Controls| CS[Context Switching] end
110-110: Add period at end of sentence.Add a period at the end of the sentence for consistency.
-The default `--max-concurrency` setting is optimized for the 64-bit MIPS emulation with multithreaded Cannon. The system automatically balances thread allocation, but you can adjust this value if needed - increase it to utilize more parallel processing power, or decrease it if system resources are constrained +The default `--max-concurrency` setting is optimized for the 64-bit MIPS emulation with multithreaded Cannon. The system automatically balances thread allocation, but you can adjust this value if needed - increase it to utilize more parallel processing power, or decrease it if system resources are constrained.pages/stack/fault-proofs/fp-components.mdx (1)
27-27: Add comma after conjunctive adverb.Add a comma after "Currently" for proper punctuation.
-The OP Stack's unique, modular design allows the decoupling of the FPP and FPVM, enabling multiple implementations. Currently there are two fault proof programs: +The OP Stack's unique, modular design allows the decoupling of the FPP and FPVM, enabling multiple implementations. Currently, there are two fault proof programs:🧰 Tools
🪛 LanguageTool
[uncategorized] ~27-~27: A comma may be missing after the conjunctive/linking adverb ‘Currently’.
Context: ...PVM, enabling multiple implementations. Currently there are two fault proof programs: * ...(SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA)
pages/stack/fault-proofs/cannon.mdx (2)
152-152: Remove extra asterisks.Remove the extra asterisks in the word "important".
-important**, as a key design decision +important, as a key design decision
222-222: Use consistent hyphenation.Use consistent hyphenation for "multi-threaded" throughout the document.
-The multi-threaded implementation maintains +The multithreaded implementation maintains🧰 Tools
🪛 LanguageTool
[misspelling] ~222-~222: This word is normally spelled as one.
Context: ...rmance through parallel processing The multi-threaded implementation maintains deterministic ...(EN_COMPOUNDS_MULTI_THREADED)
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pages/stack/fault-proofs/cannon.mdx(6 hunks)pages/stack/fault-proofs/challenger.mdx(4 hunks)pages/stack/fault-proofs/fp-components.mdx(5 hunks)pages/stack/fault-proofs/mips.mdx(2 hunks)pages/stack/interop/op-supervisor.mdx(1 hunks)words.txt(7 hunks)
✅ Files skipped from review due to trivial changes (1)
- pages/stack/interop/op-supervisor.mdx
🧰 Additional context used
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pages/stack/fault-proofs/challenger.mdx (1)
Pattern **/*.mdx: "ALWAYS review Markdown content THOROUGHLY with the following criteria:
- Use proper nouns in place of personal pronouns like 'We' and 'Our' to maintain consistency in communal documentation.
- Avoid gender-specific language and use the imperative form.
- Monitor capitalization for emphasis. Avoid using all caps, italics, or bold for emphasis.
- Ensure proper nouns are capitalized in sentences.
- Apply the Oxford comma.
- Use proper title case for buttons, tab names, page names, and links. Sentence case should be used for body content and short phrases, even in links.
- Use correct spelling and grammar at all times (IMPORTANT).
- For H1, H2, and H3 headers:
- Use sentence case, capitalizing only the first word.
- Preserve the capitalization of proper nouns, technical terms, and acronyms as defined in the 'nouns.txt' file located in the root directory of the project.
- Do not automatically lowercase words that appear in the 'nouns.txt' file, regardless of their position in the header.
- Flag any headers that seem to inconsistently apply these rules for manual review.
- When reviewing capitalization, always refer to the 'nouns.txt' file for the correct capitalization of proper nouns and technical terms specific to the project.
"
pages/stack/fault-proofs/mips.mdx (1)
Pattern **/*.mdx: "ALWAYS review Markdown content THOROUGHLY with the following criteria:
- Use proper nouns in place of personal pronouns like 'We' and 'Our' to maintain consistency in communal documentation.
- Avoid gender-specific language and use the imperative form.
- Monitor capitalization for emphasis. Avoid using all caps, italics, or bold for emphasis.
- Ensure proper nouns are capitalized in sentences.
- Apply the Oxford comma.
- Use proper title case for buttons, tab names, page names, and links. Sentence case should be used for body content and short phrases, even in links.
- Use correct spelling and grammar at all times (IMPORTANT).
- For H1, H2, and H3 headers:
- Use sentence case, capitalizing only the first word.
- Preserve the capitalization of proper nouns, technical terms, and acronyms as defined in the 'nouns.txt' file located in the root directory of the project.
- Do not automatically lowercase words that appear in the 'nouns.txt' file, regardless of their position in the header.
- Flag any headers that seem to inconsistently apply these rules for manual review.
- When reviewing capitalization, always refer to the 'nouns.txt' file for the correct capitalization of proper nouns and technical terms specific to the project.
"
pages/stack/fault-proofs/cannon.mdx (1)
Pattern **/*.mdx: "ALWAYS review Markdown content THOROUGHLY with the following criteria:
- Use proper nouns in place of personal pronouns like 'We' and 'Our' to maintain consistency in communal documentation.
- Avoid gender-specific language and use the imperative form.
- Monitor capitalization for emphasis. Avoid using all caps, italics, or bold for emphasis.
- Ensure proper nouns are capitalized in sentences.
- Apply the Oxford comma.
- Use proper title case for buttons, tab names, page names, and links. Sentence case should be used for body content and short phrases, even in links.
- Use correct spelling and grammar at all times (IMPORTANT).
- For H1, H2, and H3 headers:
- Use sentence case, capitalizing only the first word.
- Preserve the capitalization of proper nouns, technical terms, and acronyms as defined in the 'nouns.txt' file located in the root directory of the project.
- Do not automatically lowercase words that appear in the 'nouns.txt' file, regardless of their position in the header.
- Flag any headers that seem to inconsistently apply these rules for manual review.
- When reviewing capitalization, always refer to the 'nouns.txt' file for the correct capitalization of proper nouns and technical terms specific to the project.
"
pages/stack/fault-proofs/fp-components.mdx (1)
Pattern **/*.mdx: "ALWAYS review Markdown content THOROUGHLY with the following criteria:
- Use proper nouns in place of personal pronouns like 'We' and 'Our' to maintain consistency in communal documentation.
- Avoid gender-specific language and use the imperative form.
- Monitor capitalization for emphasis. Avoid using all caps, italics, or bold for emphasis.
- Ensure proper nouns are capitalized in sentences.
- Apply the Oxford comma.
- Use proper title case for buttons, tab names, page names, and links. Sentence case should be used for body content and short phrases, even in links.
- Use correct spelling and grammar at all times (IMPORTANT).
- For H1, H2, and H3 headers:
- Use sentence case, capitalizing only the first word.
- Preserve the capitalization of proper nouns, technical terms, and acronyms as defined in the 'nouns.txt' file located in the root directory of the project.
- Do not automatically lowercase words that appear in the 'nouns.txt' file, regardless of their position in the header.
- Flag any headers that seem to inconsistently apply these rules for manual review.
- When reviewing capitalization, always refer to the 'nouns.txt' file for the correct capitalization of proper nouns and technical terms specific to the project.
"
🪛 LanguageTool
words.txt
[duplication] ~82-~82: Möglicher Tippfehler: ein Wort wird wiederholt
Context: ...CAP datacap DATADIR datadir dependecies Devnet devnet devnets devx direnv DISABLETXPOOLGOSSIP...
(GERMAN_WORD_REPEAT_RULE)
[duplication] ~107-~107: Möglicher Tippfehler: ein Wort wird wiederholt
Context: ...erbase Ethernow ETHSTATS ethstats EVM's EVMTIMEOUT evmtimeout executability exfiltrate EXITWHENSYNCED...
(GERMAN_WORD_REPEAT_RULE)
[duplication] ~294-~294: Möglicher Tippfehler: ein Wort wird wiederholt
Context: ... Prestate prestate prestates PREVRENDAO PRICEBUMP pricebump PRICELIMIT pricelimit productionize pro...
(GERMAN_WORD_REPEAT_RULE)
pages/stack/fault-proofs/cannon.mdx
[uncategorized] ~53-~53: Possible missing article found.
Context: ...icipants in a fault dispute game to run OP-Program such that, given the same L2 ou...
(AI_HYDRA_LEO_MISSING_AN)
[style] ~53-~53: ‘exact same’ might be wordy. Consider a shorter alternative.
Context: ...enerates the same witness proof for the exact same MIPS instruction that will be run oncha...
(EN_WORDINESS_PREMIUM_EXACT_SAME)
[style] ~65-~65: Consider an alternative for the often overused word ‘important’.
Context: ...the mipsevm, how memory is stored isn't important, as it can hold the entire monolithic m...
(NOT_IMPORTANT)
[style] ~67-~67: Consider a shorter alternative to avoid wordiness.
Context: ...uch that only small portions are needed in order to run a MIPS instruction onchain. This is...
(IN_ORDER_TO_PREMIUM)
[style] ~186-~186: ‘exactly the same’ might be wordy. Consider a shorter alternative.
Context: ...tructions. In fact, they must produce exactly the same results given the same instruction, m...
(EN_WORDINESS_PREMIUM_EXACTLY_THE_SAME)
[misspelling] ~222-~222: This word is normally spelled as one.
Context: ...rmance through parallel processing The multi-threaded implementation maintains deterministic ...
(EN_COMPOUNDS_MULTI_THREADED)
pages/stack/fault-proofs/fp-components.mdx
[uncategorized] ~27-~27: A comma may be missing after the conjunctive/linking adverb ‘Currently’.
Context: ...PVM, enabling multiple implementations. Currently there are two fault proof programs: * ...
(SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA)
[uncategorized] ~29-~29: Loose punctuation mark.
Context: ... fault proof programs: * op-program: The default FPP that implements the sta...
(UNLIKELY_OPENING_PUNCTUATION)
[style] ~66-~66: Consider a more expressive alternative.
Context: ... to be proven in the L1 EVM onchain. To do this, only one instruction is proven at...
(DO_ACHIEVE)
[typographical] ~66-~66: Consider adding a comma after ‘generally’ for more clarity.
Context: ...erent for each FPVM implementation, but generally it looks similar to Cannon, which now s...
(RB_LY_COMMA)
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pages/stack/interop/security.mdx(1 hunks)words.txt(6 hunks)
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- pages/stack/interop/security.mdx
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🪛 LanguageTool
words.txt
[duplication] ~106-~106: Möglicher Tippfehler: ein Wort wird wiederholt
Context: ...erbase Ethernow ETHSTATS ethstats EVM's EVMTIMEOUT evmtimeout executability exfiltrate EXITWHENSYNCED...
(GERMAN_WORD_REPEAT_RULE)
[duplication] ~293-~293: Möglicher Tippfehler: ein Wort wird wiederholt
Context: ... Prestate prestate prestates PREVRENDAO PRICEBUMP pricebump PRICELIMIT pricelimit productionize pro...
(GERMAN_WORD_REPEAT_RULE)
⏰ Context from checks skipped due to timeout of 90000ms (4)
- GitHub Check: Redirect rules - docs-optimism
- GitHub Check: Header rules - docs-optimism
- GitHub Check: Pages changed - docs-optimism
- GitHub Check: pr-workflow
🔇 Additional comments (1)
words.txt (1)
179-179: LGTM!The following terms are correctly added/updated and align with the technical context:
- "Kona": Refers to the new Rust-based Fault Proof Program
- "mipsevm": Case change from MIPSEVM matches actual usage
- "PREVRENDAO": Technical term related to Ethereum
- "revm": Technical term for Rust EVM implementation
Also applies to: 206-206, 293-293, 323-323
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♻️ Duplicate comments (3)
words.txt (2)
21-21:⚠️ Potential issueFix typo in "Asterisc".
The word "Asterisc" appears to be misspelled. The correct spelling is "Asterisk".
-Asterisc +Asterisk
111-111:⚠️ Potential issueRemove apostrophe from "EVM's".
In a word list context, we should avoid possessive forms. Use "EVM" or "EVMs" instead.
-EVM's +EVM🧰 Tools
🪛 LanguageTool
[duplication] ~111-~111: Möglicher Tippfehler: ein Wort wird wiederholt
Context: ...erbase Ethernow ETHSTATS ethstats EVM's EVMTIMEOUT evmtimeout executability exfiltrate EXITWHENSYNCED...(GERMAN_WORD_REPEAT_RULE)
pages/stack/fault-proofs/cannon.mdx (1)
217-217: 🛠️ Refactor suggestionRevise multithreading description.
Based on past review comments, we should clarify that multithreading doesn't imply parallel execution.
-* Concurrent execution of MIPS instructions across multiple threads +* Multi-threaded execution of MIPS instructions with deterministic scheduling
🧹 Nitpick comments (4)
pages/stack/fault-proofs/challenger.mdx (3)
12-14: Improve clarity of memory space description.The theoretical memory space of 16 exabytes should be mentioned in bytes for better understanding.
-This upgrade to 64-bit addressing provides access to a theoretical 16 exabytes of virtual memory space +This upgrade to 64-bit addressing provides access to a theoretical 16 exabytes (16,384 petabytes or 2^64 bytes) of virtual memory space
36-42: Add missing relationship between subgraph components.The mermaid diagram's VM subgraph components lack explicit relationships between Thread States, Asynchronous GC, and Context Switching.
subgraph VM[64-bit MIPS VM] MT[Multithreaded Execution] -->|Manages| TS[Thread States] MT -->|Enables| GC[Asynchronous GC] MT -->|Controls| CS[Context Switching] + TS -->|Influences| CS + GC -->|Coordinates with| CS end
110-110: Clarify thread allocation behavior.The statement about automatic thread balancing should specify the factors considered in the balancing process.
-The system automatically balances thread allocation +The system automatically balances thread allocation based on available CPU cores and memory resourcespages/stack/fault-proofs/cannon.mdx (1)
49-53: Enhance ISA transition explanation.The transition from 32-bit to 64-bit ISA deserves more context about the benefits and implications.
Add a note about backward compatibility and performance implications:
Within Cannon is the `mipsevm` that is built to handle the MIPS R4000, 64-bit Instruction Set Architecture (ISA). The ELF file contains MIPS instructions, where the code that has been compiled into MIPS instructions is OP-Program. + +The upgrade from MIPS R3000 (32-bit) to R4000 (64-bit) maintains backward compatibility while enabling: +- Extended addressing capabilities for larger programs +- Enhanced performance through 64-bit operations +- Improved floating-point support🧰 Tools
🪛 LanguageTool
[uncategorized] ~53-~53: Possible missing article found.
Context: ...icipants in a fault dispute game to run OP-Program such that, given the same L2 ou...(AI_HYDRA_LEO_MISSING_AN)
[style] ~53-~53: ‘exact same’ might be wordy. Consider a shorter alternative.
Context: ...enerates the same witness proof for the exact same MIPS instruction that will be run oncha...(EN_WORDINESS_PREMIUM_EXACT_SAME)
📜 Review details
Configuration used: .coderabbit.yaml
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (4)
pages/stack/fault-proofs/cannon.mdx(5 hunks)pages/stack/fault-proofs/challenger.mdx(4 hunks)pages/stack/interop/security.mdx(1 hunks)words.txt(5 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- pages/stack/interop/security.mdx
🧰 Additional context used
📓 Path-based instructions (2)
pages/stack/fault-proofs/challenger.mdx (1)
Pattern **/*.mdx: "ALWAYS review Markdown content THOROUGHLY with the following criteria:
- Use proper nouns in place of personal pronouns like 'We' and 'Our' to maintain consistency in communal documentation.
- Avoid gender-specific language and use the imperative form.
- Monitor capitalization for emphasis. Avoid using all caps, italics, or bold for emphasis.
- Ensure proper nouns are capitalized in sentences.
- Apply the Oxford comma.
- Use proper title case for buttons, tab names, page names, and links. Sentence case should be used for body content and short phrases, even in links.
- Use correct spelling and grammar at all times (IMPORTANT).
- For H1, H2, and H3 headers:
- Use sentence case, capitalizing only the first word.
- Preserve the capitalization of proper nouns, technical terms, and acronyms as defined in the 'nouns.txt' file located in the root directory of the project.
- Do not automatically lowercase words that appear in the 'nouns.txt' file, regardless of their position in the header.
- Flag any headers that seem to inconsistently apply these rules for manual review.
- When reviewing capitalization, always refer to the 'nouns.txt' file for the correct capitalization of proper nouns and technical terms specific to the project.
"
pages/stack/fault-proofs/cannon.mdx (1)
Pattern **/*.mdx: "ALWAYS review Markdown content THOROUGHLY with the following criteria:
- Use proper nouns in place of personal pronouns like 'We' and 'Our' to maintain consistency in communal documentation.
- Avoid gender-specific language and use the imperative form.
- Monitor capitalization for emphasis. Avoid using all caps, italics, or bold for emphasis.
- Ensure proper nouns are capitalized in sentences.
- Apply the Oxford comma.
- Use proper title case for buttons, tab names, page names, and links. Sentence case should be used for body content and short phrases, even in links.
- Use correct spelling and grammar at all times (IMPORTANT).
- For H1, H2, and H3 headers:
- Use sentence case, capitalizing only the first word.
- Preserve the capitalization of proper nouns, technical terms, and acronyms as defined in the 'nouns.txt' file located in the root directory of the project.
- Do not automatically lowercase words that appear in the 'nouns.txt' file, regardless of their position in the header.
- Flag any headers that seem to inconsistently apply these rules for manual review.
- When reviewing capitalization, always refer to the 'nouns.txt' file for the correct capitalization of proper nouns and technical terms specific to the project.
"
🪛 LanguageTool
pages/stack/fault-proofs/cannon.mdx
[uncategorized] ~53-~53: Possible missing article found.
Context: ...icipants in a fault dispute game to run OP-Program such that, given the same L2 ou...
(AI_HYDRA_LEO_MISSING_AN)
[style] ~53-~53: ‘exact same’ might be wordy. Consider a shorter alternative.
Context: ...enerates the same witness proof for the exact same MIPS instruction that will be run oncha...
(EN_WORDINESS_PREMIUM_EXACT_SAME)
[style] ~65-~65: Consider an alternative for the often overused word ‘important’.
Context: ...the mipsevm, how memory is stored isn't important, as it can hold the entire monolithic m...
(NOT_IMPORTANT)
[style] ~67-~67: Consider a shorter alternative to avoid wordiness.
Context: ...uch that only small portions are needed in order to run a MIPS instruction onchain. This is...
(IN_ORDER_TO_PREMIUM)
[style] ~186-~186: ‘exactly the same’ might be wordy. Consider a shorter alternative.
Context: ...tructions. In fact, they must produce exactly the same results given the same instruction, m...
(EN_WORDINESS_PREMIUM_EXACTLY_THE_SAME)
[misspelling] ~222-~222: This word is normally spelled as one.
Context: ...rmance through parallel processing The multi-threaded implementation maintains deterministic ...
(EN_COMPOUNDS_MULTI_THREADED)
words.txt
[duplication] ~111-~111: Möglicher Tippfehler: ein Wort wird wiederholt
Context: ...erbase Ethernow ETHSTATS ethstats EVM's EVMTIMEOUT evmtimeout executability exfiltrate EXITWHENSYNCED...
(GERMAN_WORD_REPEAT_RULE)
⏰ Context from checks skipped due to timeout of 90000ms (4)
- GitHub Check: Redirect rules - docs-optimism
- GitHub Check: Header rules - docs-optimism
- GitHub Check: Pages changed - docs-optimism
- GitHub Check: pr-workflow
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Actionable comments posted: 0
🧹 Nitpick comments (7)
pages/stack/fault-proofs/cannon.mdx (7)
49-52: Enhance technical accuracy of the MIPS architecture description.Consider adding more specific details about the MIPS R4000's capabilities and features that are relevant to Cannon's implementation.
-Within Cannon is the `mipsevm` that is built to handle the MIPS R4000, 64-bit Instruction Set Architecture (ISA). The ELF file contains MIPS instructions, where the code that has been compiled into MIPS instructions is OP-Program. +Within Cannon is the `mipsevm` that is built to handle the MIPS R4000 processor architecture, which implements the MIPS III 64-bit Instruction Set Architecture (ISA). The ELF file contains MIPS instructions compiled from OP-Program source code.
65-67: Improve clarity of memory management description.The explanation can be more concise and clearer.
-For the mipsevm, how memory is stored isn't important, as it can hold the entire monolithic memory within the Go runtime. The addressable memory range is [0, 2^64-1], as the VM implements a 64-bit address space. The memory layout uses the typical monolithic memory structure, and the VM operates as though it were interacting directly with physical memory. +The mipsevm maintains the entire monolithic memory within the Go runtime. With its 64-bit address space, the VM can address the full range of [0, 2^64-1]. The memory layout follows a typical monolithic structure, with the VM operating as if interacting directly with physical memory. -In this way, how memory is represented is abstracted away from the VM itself. However, it is important for memory to be represented such that only small portions are needed in order to run a MIPS instruction onchain. +This approach abstracts memory representation from the VM itself, while ensuring that only small portions of memory are required to run a MIPS instruction onchain.🧰 Tools
🪛 LanguageTool
[style] ~65-~65: Consider an alternative for the often overused word ‘important’.
Context: ...the mipsevm, how memory is stored isn't important, as it can hold the entire monolithic m...(NOT_IMPORTANT)
[style] ~67-~67: Consider a shorter alternative to avoid wordiness.
Context: ...uch that only small portions are needed in order to run a MIPS instruction onchain. This is...(IN_ORDER_TO_PREMIUM)
71-72: Clarify the binary tree depth calculation.The explanation of how the tree depth spans the address space needs more detail.
-The tree has a fixed-depth of 28 levels, with leaf values of 32 bytes each. This spans the full 64-bit address space: 2**28 * 32 = 2**64. +The tree has a fixed depth of 28 levels, with leaf values of 32 bytes each. This structure spans the full 64-bit address space through the following calculation: +- Each leaf stores 32 bytes (2^5 bytes) +- With 28 levels (2^28 leaves), the total addressable space is: 2^28 * 2^5 = 2^33 bytes = 2^64 bits
108-108: Fix formatting in Memory struct description.There's a formatting error in the text.
-* Instead of storing just the memory Merkle root, there is aMemoryStruct pointer for the binary Merkle tree representation of the entire 64-bit memory space. +* Instead of storing just the memory Merkle root, there is a `Memory` struct pointer for the binary Merkle tree representation of the entire 64-bit memory space.
185-191: Improve clarity of implementation comparison.The text can be more concise and technically precise.
-The offchain `mips.go` and the onchain Cannon `MIPS.sol` behave similarly when it comes to executing 64-bit, MIPS III instructions. -In fact, they must produce **exactly the same results** given the same instruction, memory, and register state. +The offchain `mips.go` and the onchain Cannon `MIPS.sol` must produce identical results when executing MIPS III 64-bit instructions, given the same instruction, memory, and register state. -The mipsevm contains the entire 64-bit monolithic memory space, is responsible for maintaining the memory state based on the results of MIPS instructions, and generates the memory binary Merkle tree, Merkle root, and memory Merkle proofs. +The mipsevm maintains the complete 64-bit memory space and handles: +- Memory state updates based on MIPS instruction results +- Binary Merkle tree generation and maintenance +- Merkle root calculation +- Memory Merkle proof generation🧰 Tools
🪛 LanguageTool
[style] ~186-~186: ‘exactly the same’ might be wordy. Consider a shorter alternative.
Context: ...tructions. In fact, they must produce exactly the same results given the same instruction, m...(EN_WORDINESS_PREMIUM_EXACTLY_THE_SAME)
209-212: Clarify the pre-image reading enhancement.The explanation of the upgrade from 32-bit to 64-bit pre-image reading should be more detailed.
-Although the oracle provides up to 32 bytes of the pre-image, Cannon supports reading up to 8 bytes at a time in its 64-bit implementation, unifying memory operations with 64-bit load/stores. This enhancement from the previous 32-bit implementation allows for more efficient memory handling and improved performance. +Although the oracle provides up to 32 bytes of the pre-image, Cannon's 64-bit implementation: +- Reads up to 8 bytes (64 bits) at a time +- Aligns with native 64-bit load/store operations +- Reduces the number of memory operations compared to the 32-bit implementation +- Improves performance through better memory access patterns
213-222: Enhance the multi-threading section with technical details.The multi-threading section would benefit from more specific technical information.
### Multi-threading support -A significant enhancement to Cannon is the introduction of multi-threading capabilities. This upgrade enables: +Cannon now supports multi-threading through the following technical implementations: -* Execution of MIPS instructions across multiple threads -* Deterministic thread scheduling and state management -* Asynchronous garbage collection through Go runtime -* Improved performance through parallel processing +* Thread Management: + - Thread-local storage (TLS) for maintaining thread-specific state + - Atomic operations for thread synchronization + - Context switching between threads at deterministic points + +* Scheduling: + - Priority-based thread scheduling + - Deterministic thread selection algorithm + - State preservation during context switches + +* Memory Management: + - Thread-safe memory operations + - Concurrent garbage collection by Go runtime + - Atomic memory access for shared resources -The multi-threaded implementation maintains deterministic execution by carefully managing thread states and context switching, ensuring that the same execution trace can be reproduced both onchain and offchain. +The implementation ensures deterministic execution through: +- Controlled thread scheduling points +- Reproducible context switching decisions +- Consistent memory ordering across threads +- Verifiable execution traces for both onchain and offchain environments🧰 Tools
🪛 LanguageTool
[misspelling] ~222-~222: This word is normally spelled as one.
Context: ...rmance through parallel processing The multi-threaded implementation maintains deterministic ...(EN_COMPOUNDS_MULTI_THREADED)
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pages/stack/fault-proofs/cannon.mdx(5 hunks)
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pages/stack/fault-proofs/cannon.mdx (1)
Pattern **/*.mdx: "ALWAYS review Markdown content THOROUGHLY with the following criteria:
- Use proper nouns in place of personal pronouns like 'We' and 'Our' to maintain consistency in communal documentation.
- Avoid gender-specific language and use the imperative form.
- Monitor capitalization for emphasis. Avoid using all caps, italics, or bold for emphasis.
- Ensure proper nouns are capitalized in sentences.
- Apply the Oxford comma.
- Use proper title case for buttons, tab names, page names, and links. Sentence case should be used for body content and short phrases, even in links.
- Use correct spelling and grammar at all times (IMPORTANT).
- For H1, H2, and H3 headers:
- Use sentence case, capitalizing only the first word.
- Preserve the capitalization of proper nouns, technical terms, and acronyms as defined in the 'nouns.txt' file located in the root directory of the project.
- Do not automatically lowercase words that appear in the 'nouns.txt' file, regardless of their position in the header.
- Flag any headers that seem to inconsistently apply these rules for manual review.
- When reviewing capitalization, always refer to the 'nouns.txt' file for the correct capitalization of proper nouns and technical terms specific to the project.
"
🪛 LanguageTool
pages/stack/fault-proofs/cannon.mdx
[style] ~53-~53: ‘exact same’ might be wordy. Consider a shorter alternative.
Context: ...enerates the same witness proof for the exact same MIPS instruction that will be run oncha...
(EN_WORDINESS_PREMIUM_EXACT_SAME)
[style] ~65-~65: Consider an alternative for the often overused word ‘important’.
Context: ...the mipsevm, how memory is stored isn't important, as it can hold the entire monolithic m...
(NOT_IMPORTANT)
[style] ~67-~67: Consider a shorter alternative to avoid wordiness.
Context: ...uch that only small portions are needed in order to run a MIPS instruction onchain. This is...
(IN_ORDER_TO_PREMIUM)
[style] ~186-~186: ‘exactly the same’ might be wordy. Consider a shorter alternative.
Context: ...tructions. In fact, they must produce exactly the same results given the same instruction, m...
(EN_WORDINESS_PREMIUM_EXACTLY_THE_SAME)
[misspelling] ~222-~222: This word is normally spelled as one.
Context: ...rmance through parallel processing The multi-threaded implementation maintains deterministic ...
(EN_COMPOUNDS_MULTI_THREADED)
⏰ Context from checks skipped due to timeout of 90000ms (3)
- GitHub Check: Redirect rules - docs-optimism
- GitHub Check: Header rules - docs-optimism
- GitHub Check: Pages changed - docs-optimism
4 pages updated for multithreaded cannon, 64-bit architecture: