Information processing apparatus
US-2024385843-A1 · Nov 21, 2024 · US
Computing system with transactional memory using millicode assists
US9104427B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9104427-B2 |
| Application number | US-201213655636-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 19, 2012 |
| Priority date | May 14, 2007 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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A computing system processes memory transactions for parallel processing of multiple threads of execution with millicode assists. The computing system transactional memory support provides a Transaction Table in memory and a method of fast detection of potential conflicts between multiple transactions. Special instructions may mark the boundaries of a transaction and identify memory locations applicable to a transaction. A ‘private to transaction’ (PTRAN) tag, directly addressable as part of the main data storage memory location, enables a quick detection of potential conflicts with other transactions that are concurrently executing on another thread of said computing system. The tag indicates whether (or not) a data entry in memory is part of a speculative memory state of an uncommitted transaction that is currently active in the system. Program millicode provides transactional memory functions including creating and updating transaction tables, committing transactions and controlling the rollback of transactions which fail.
First claim
Opening claim text (preview).
What is claimed is: 1. A computing system with transactional memory, comprising: a multithreaded microprocessor configured to support the transactional memory, the microprocessor configured to execute complex instructions using millicode by a millicode mode and an atomic instruction group (AIG) mode, the microprocessor comprising: an address history table (AHT) coupled to load and store units, the load and store units configured to write information entries in the AHT, the AHT c…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9104427B2 cover?
- A computing system processes memory transactions for parallel processing of multiple threads of execution with millicode assists. The computing system transactional memory support provides a Transaction Table in memory and a method of fast detection of potential conflicts between multiple transactions. Special instructions may mark the boundaries of a transaction and identify memory locations a…
- Who is the assignee on this patent?
- IBM
- What technology area does this patent fall under?
- Primary CPC classification G06F9/3885. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 11 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).