公开(公告)号：US09697125B2

公开(公告)日：2017-07-04

申请号：US14682757

申请日：2015-04-09

Applicant: Advanced Micro Devices, Inc.

Inventor： Jaewoong Chung ,  Shekhar Srikantaiah ,  Lisa Hsu

IPC: G06F12/00 ,  G06F12/084 ,  G06F12/0842 ,  G06F12/126 ,  G06F12/123

CPC classification number: G06F12/084 ,  G06F12/0842 ,  G06F12/123 ,  G06F12/126 ,  G06F2212/1024 ,  G06F2212/152 ,  G06F2212/251 ,  G06F2212/62

Abstract: For each access request received at a shared cache of the data processing device, a memory access pattern (MAP) monitor predicts which of the memory banks, and corresponding row buffers, would be accessed by the access request if the requesting thread were the only thread executing at the data processing device. By recording predicted accesses over time for a number of access requests, the MAP monitor develops a pattern of predicted memory accesses by executing threads. The pattern can be employed to assign resources at the shared cache, thereby managing memory more efficiently.

公开(公告)号：US20130103908A1

公开(公告)日：2013-04-25

申请号：US13714132

申请日：2012-12-13

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Jaewoong Chung ,  David S. Christie ,  Michael Hohmuth ,  Stephan Diestelhorst ,  Martin Pohlack ,  Luke Yen

IPC: G06F12/00

CPC classification number: G06F12/00 ,  G06F9/3004 ,  G06F9/30087 ,  G06F9/3834 ,  G06F9/3857

Abstract: A method and apparatus are disclosed for implementing early release of speculatively read data in a hardware transactional memory system. A processing core comprises a hardware transactional memory system configured to receive an early release indication for a specified word of a group of words in a read set of an active transaction. The early release indication comprises a request to remove the specified word from the read set. In response to the early release request, the processing core removes the group of words from the read set only after determining that no word in the group other than the specified word has been speculatively read during the active transaction.

Abstract translation: 公开了用于实现在硬件事务存储器系统中推测读取数据的早期释放的方法和装置。 处理核心包括硬件事务存储器系统，其被配置为接收活动事务的读取集合中的一组单词的指定字的早期释放指示。 早期释放指示包括从读取集中移除指定单词的请求。 响应于早期释放请求，处理核心仅在确定在活动事务期间没有推测性地读取除了指定单词之外的组中的任何单词之后才从读取集合中移除单词组。

公开(公告)号：US20150317249A1

公开(公告)日：2015-11-05

申请号：US14682757

申请日：2015-04-09

Applicant: Advanced Micro Devices, Inc.

Inventor： Jaewoong Chung ,  Shekhar Srikantaiah ,  Lisa Hsu

IPC: G06F12/08

CPC classification number: G06F12/084 ,  G06F12/0842 ,  G06F12/123 ,  G06F12/126 ,  G06F2212/1024 ,  G06F2212/152 ,  G06F2212/251 ,  G06F2212/62

Abstract: For each access request received at a shared cache of the data processing device, a memory access pattern (MAP) monitor predicts which of the memory banks, and corresponding row buffers, would be accessed by the access request if the requesting thread were the only thread executing at the data processing device. By recording predicted accesses over time for a number of access requests, the MAP monitor develops a pattern of predicted memory accesses by executing threads. The pattern can be employed to assign resources at the shared cache, thereby managing memory more efficiently.

Abstract translation: 对于在数据处理设备的共享高速缓存处接收到的每个访问请求，如果请求的线程是唯一的线程，则存储器访问模式（MAP）监视器预测访问请求将访问哪个存储体和对应的行缓冲器 在数据处理装置执行。 通过针对多个访问请求记录对时间的预测访问，MAP监视器通过执行线程来开发预测的存储器访问的模式。 可以使用该模式来在共享高速缓存上分配资源，从而更有效地管理存储器。

公开(公告)号：US08543775B2

公开(公告)日：2013-09-24

申请号：US13714132

申请日：2012-12-13

Applicant: Advanced Micro Devices, Inc.

Inventor： Jaewoong Chung ,  David S Christie ,  Michael Hohmuth ,  Stephan Diestelhorst ,  Martin Pohlack ,  Luke Yen

IPC: G06F12/00

CPC classification number: G06F12/00 ,  G06F9/3004 ,  G06F9/30087 ,  G06F9/3834 ,  G06F9/3857

Abstract: A method and apparatus are disclosed for implementing early release of speculatively read data in a hardware transactional memory system. A processing core comprises a hardware transactional memory system configured to receive an early release indication for a specified word of a group of words in a read set of an active transaction. The early release indication comprises a request to remove the specified word from the read set. In response to the early release request, the processing core removes the group of words from the read set only after determining that no word in the group other than the specified word has been speculatively read during the active transaction.

Abstract translation: 公开了用于实现在硬件事务存储器系统中推测读取数据的早期释放的方法和装置。 处理核心包括硬件事务存储器系统，其被配置为接收活动事务的读取集合中的一组单词的指定字的早期释放指示。 早期释放指示包括从读取集中移除指定单词的请求。 响应于早期释放请求，处理核心仅在确定在活动事务期间没有推测性地读取除了指定单词之外的组中的任何单词之后才从读取集合中移除单词组。

公开(公告)号：US10956163B2

公开(公告)日：2021-03-23

申请号：US15845641

申请日：2017-12-18

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Jaewoong Chung ,  David S. Christie ,  Michael P. Hohmuth ,  Stephan Diestelhorst ,  Martin Pohlack ,  Luke Yen

IPC: G06F9/38 ,  G06F9/30 ,  G06F9/46

Abstract: A processing core of a plurality of processing cores is configured to execute a speculative region of code a single atomic memory transaction with respect one or more others of the plurality of processing cores. In response to determining an abort condition for issued one of the plurality of program instructions and in response to determining that the issued program instruction is not part of a mispredicted execution path, the processing core is configured to abort an attempt to execute the speculative region of code.