公开(公告)号：US20140281237A1

公开(公告)日：2014-09-18

申请号：US13830967

申请日：2013-03-14

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Paul N. Loewenstein ,  Stephen E. Phillips ,  David Richard Smentek ,  Connie Wai Mun Cheung ,  Serena Wing Yee Leung ,  Damien Walker ,  Ramaswamy Sivaramakrishnan

IPC: G06F12/08

CPC classification number: G06F12/0808 ,  G06F12/0811 ,  G06F12/0817 ,  G06F12/0828

Abstract: A method for cache coherence, including: broadcasting, by a requester cache (RC) over a partially-ordered request network (RN), a peer-to-peer (P2P) request for a cacheline to a plurality of slave caches; receiving, by the RC and over the RN while the P2P request is pending, a forwarded request for the cacheline from a gateway; receiving, by the RC and after receiving the forwarded request, a plurality of responses to the P2P request from the plurality of slave caches; setting an intra-processor state of the cacheline in the RC, wherein the intra-processor state also specifies an inter-processor state of the cacheline; and issuing, by the RC, a response to the forwarded request after setting the intra-processor state and after the P2P request is complete; and modifying, by the RC, the intra-processor state in response to issuing the response to the forwarded request.

Abstract translation: 一种用于高速缓存一致性的方法，包括：通过部分有序请求网络（RN）的请求者缓存（RC）广播对多个从高速缓存的高速缓存线的对等（P2P）请求; 当P2P请求正在等待时，由RC接收和通过RN接收来自网关的高速缓存行的转发请求; 由所述RC接收所述转发请求后，从所述多个从属高速缓存中接收对所述P2P请求的多个响应; 在所述RC中设置所述高速缓存行的处理器内状态，其中所述处理器内状态还指定所述高速缓存行的处理器间状态; 以及在设置处理器内状态之后，在P2P请求完成之后，由RC发出对转发请求的响应; 以及响应于发出对所转发的请求的响应，由RC修改处理器内状态。

公开(公告)号：US20150278092A1

公开(公告)日：2015-10-01

申请号：US14675351

申请日：2015-03-31

Applicant: Oracle International Corporation

Inventor： David Richard Smentek ,  Kathirgamar Aingaran ,  Sumti Jairath ,  Manling Yang ,  Serena Wing Yee Leung ,  Paul N. Loewenstein

IPC: G06F12/08

CPC classification number: G06F9/5016 ,  G06F12/0813 ,  G06F12/0822 ,  G06F12/0831

Abstract: A method and system for allocating data streams that includes receiving, at an allocator, a data stream. The data stream includes a memory address and data associated with the memory address. The method also includes examining, by the allocator, the data stream to make a determination that the data stream is a soft allocating data stream, and then sending, from the allocator based on the determination, a plurality of write probes to a plurality of caches, wherein each write probe of the plurality of write probes includes at least part of the memory address. Additionally, the method includes receiving, at the allocator in response to a write probe of the plurality of write probes, a cache line present acknowledgement from a cache of the plurality of caches, and directing, by the allocator in response to the cache line present acknowledgement, the data of the data stream to the cache.

Abstract translation: 一种用于分配数据流的方法和系统，包括在分配器处接收数据流。 数据流包括与存储器地址相关联的存储器地址和数据。 该方法还包括由分配器检查数据流以确定数据流是软分配数据流，然后基于确定从分配器发送多个写入探测到多个高速缓存 ，其中所述多个写入探针中的每个写入探针包括所述存储器地址的至少一部分。 另外，该方法包括在分配器处响应于多个写入探测器的写入探针而从多个高速缓存的高速缓存中接收高速缓存行当前确认，并且响应于存在的高速缓存行指示分配器 确认数据流到缓存的数据。

公开(公告)号：US09836406B2

公开(公告)日：2017-12-05

申请号：US14978007

申请日：2015-12-22

Applicant: Oracle International Corporation

Inventor： Serena Wing Yee Leung ,  Ramaswamy Sivaramakrishnan ,  Sumti Jairath

IPC: G06F12/12 ,  G06F12/0891 ,  G06F12/084 ,  G06F12/0895

CPC classification number: G06F12/0891 ,  G06F12/0804 ,  G06F12/084 ,  G06F12/0842 ,  G06F12/0895 ,  G06F12/121 ,  G06F12/126 ,  G06F2212/1024 ,  G06F2212/502 ,  G06F2212/62

Abstract: A method, system, and computer-readable medium for evicting cache lines that includes determining that a first cache line is to be evicted from a first Last Level Cache (LLC) partition of a partitioned LLC, and sending, based on the determination, a first notification to a second LLC partition of the partitioned LLC. The method may also include receiving, in response to the first notification, an available indication indicating that the second LLC partition is available as a designated victim cache partition; performing a selection of the second LLC partition as the designated victim cache partition; and evicting the first cache line to the second LLC partition based on the selection.

公开(公告)号：US20170177488A1

公开(公告)日：2017-06-22

申请号：US14978007

申请日：2015-12-22

Applicant: Oracle International Corporation

Inventor： Serena Wing Yee Leung ,  Ramaswamy Sivaramakrishnan ,  Sumti Jairath

IPC: G06F12/08

CPC classification number: G06F12/0891 ,  G06F12/0804 ,  G06F12/084 ,  G06F12/0842 ,  G06F12/0895 ,  G06F12/121 ,  G06F12/126 ,  G06F2212/1024 ,  G06F2212/502 ,  G06F2212/62

Abstract: A method, system, and computer-readable medium for evicting cache lines that includes determining that a first cache line is to be evicted from a first Last Level Cache (LLC) partition of a partitioned LLC, and sending, based on the determination, a first notification to a second LLC partition of the partitioned LLC. The method may also include receiving, in response to the first notification, an available indication indicating that the second LLC partition is available as a designated victim cache partition; performing a selection of the second LLC partition as the designated victim cache partition; and evicting the first cache line to the second LLC partition based on the selection.

公开(公告)号：US09836326B2

公开(公告)日：2017-12-05

申请号：US14675351

申请日：2015-03-31

Applicant: Oracle International Corporation

Inventor： David Richard Smentek ,  Kathirgamar Aingaran ,  Sumti Jairath ,  Manling Yang ,  Serena Wing Yee Leung ,  Paul N. Loewenstein

IPC: G06F12/00 ,  G06F9/50 ,  G06F12/0817 ,  G06F12/0813 ,  G06F12/0831

CPC classification number: G06F9/5016 ,  G06F12/0813 ,  G06F12/0822 ,  G06F12/0831

Abstract: A method and system for allocating data streams that includes receiving, at an allocator, a data stream. The data stream includes a memory address and data associated with the memory address. The method also includes examining, by the allocator, the data stream to make a determination that the data stream is a soft allocating data stream, and then sending, from the allocator based on the determination, a plurality of write probes to a plurality of caches, wherein each write probe of the plurality of write probes includes at least part of the memory address. Additionally, the method includes receiving, at the allocator in response to a write probe of the plurality of write probes, a cache line present acknowledgement from a cache of the plurality of caches, and directing, by the allocator in response to the cache line present acknowledgement, the data of the data stream to the cache.

公开(公告)号：US08972663B2

公开(公告)日：2015-03-03

申请号：US13830967

申请日：2013-03-14

Applicant: Oracle International Corporation

Inventor： Paul N. Loewenstein ,  Stephen E. Phillips ,  David Richard Smentek ,  Connie Wai Mun Cheung ,  Serena Wing Yee Leung ,  Damien Walker ,  Ramaswamy Sivaramakrishnan

IPC: G06F12/00 ,  G06F12/08

CPC classification number: G06F12/0808 ,  G06F12/0811 ,  G06F12/0817 ,  G06F12/0828

Abstract: A method for cache coherence, including: broadcasting, by a requester cache (RC) over a partially-ordered request network (RN), a peer-to-peer (P2P) request for a cacheline to a plurality of slave caches; receiving, by the RC and over the RN while the P2P request is pending, a forwarded request for the cacheline from a gateway; receiving, by the RC and after receiving the forwarded request, a plurality of responses to the P2P request from the plurality of slave caches; setting an intra-processor state of the cacheline in the RC, wherein the intra-processor state also specifies an inter-processor state of the cacheline; and issuing, by the RC, a response to the forwarded request after setting the intra-processor state and after the P2P request is complete; and modifying, by the RC, the intra-processor state in response to issuing the response to the forwarded request.

Abstract translation: 一种用于高速缓存一致性的方法，包括：通过部分有序请求网络（RN）的请求者缓存（RC）广播对多个从高速缓存的高速缓存线的对等（P2P）请求; 当P2P请求正在等待时，由RC接收和通过RN接收来自网关的高速缓存行的转发请求; 由所述RC接收所述转发请求后，从所述多个从属高速缓存中接收对所述P2P请求的多个响应; 在所述RC中设置所述高速缓存行的处理器内状态，其中所述处理器内状态还指定所述高速缓存行的处理器间状态; 以及在设置处理器内状态之后，在P2P请求完成之后，由RC发出对转发请求的响应; 以及响应于发出对所转发的请求的响应，由RC修改处理器内状态。