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1. 发明授权

US11625286B2 Transactional lock elision with delayed lock checking 有权
公开(公告)号：US11625286B2
公开(公告)日：2023-04-11
申请号：US16283479
申请日：2019-02-22
申请人： International Business Machines Corporation
发明人： Maged M. Michael , Marcel Mitran , Martin Ohmacht , Kai-Ting Amy Wang
IPC分类号： G06F16/23 , G06F9/52 , G06F9/46 , G06F3/06 , G06F12/14
摘要： A computer-implemented method includes the following operations. A transactional lock elision transaction including a critical section is executed. The critical section is processed. After the processing of the critical section and prior to a commit point in the transactional lock elision transaction, a status of a lock is checked. Responsive to a determination that a status of the lock is free, a result of the transactional lock elision transaction is committed.

2. 发明授权

US11010066B2 Identifying processor attributes based on detecting a guarded storage event 有权
公开(公告)号：US11010066B2
公开(公告)日：2021-05-18
申请号：US16457398
申请日：2019-06-28
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Dan F. Greiner , Christian Jacobi , Marcel Mitran , Volodymyr Paprotski , Anthony Saporito , Timothy J. Slegel
IPC分类号： G06F3/06 , G06F9/46 , G06F12/02 , G06F12/14
摘要： A guarded storage facility sets up a boundary indicating a range of addresses to be guarded or protected. When a program attempts to access an address in a guarded section defined by the boundary, a guarded storage event occurs. Use of this facility facilitates performance of certain tasks within a computing environment, including storage reclamation.

3. 发明申请

US20190188054A1 TRANSACTIONAL LOCK ELISION WITH DELAYED LOCK CHECKING 审中-公开
公开(公告)号：US20190188054A1
公开(公告)日：2019-06-20
申请号：US16283479
申请日：2019-02-22
申请人： International Business Machines Corporation
发明人： Maged M. Michael , Marcel Mitran , Martin Ohmacht , Kai-Ting Amy Wang
IPC分类号： G06F9/52 , G06F16/23 , G06F9/46 , G06F12/14 , G06F3/06
CPC分类号： G06F9/524 , G06F3/0619 , G06F3/0637 , G06F3/0644 , G06F3/067 , G06F9/466 , G06F9/467 , G06F12/1475 , G06F16/2343 , G06F2212/1052
摘要： A computer-implemented method includes the following operations. A transactional lock elision transaction including a critical section is executed. The critical section is processed. After the processing of the critical section and prior to a commit point in the transactional lock elision transaction, a status of a lock is checked. Responsive to a determination that a status of the lock is free, a result of the transactional lock elision transaction is committed.

4. 发明授权

US10025589B2 Conditional transaction end instruction 有权
公开(公告)号：US10025589B2
公开(公告)日：2018-07-17
申请号：US15228067
申请日：2016-08-04
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Dan F. Greiner , Christian Jacobi , Marcel Mitran , Donald W. Schmidt , Timothy J. Slegel
IPC分类号： G06F9/30 , G06F9/38 , G06F9/46
CPC分类号： G06F9/3005 , G06F9/3004 , G06F9/30043 , G06F9/30047 , G06F9/30072 , G06F9/30076 , G06F9/30087 , G06F9/30152 , G06F9/30189 , G06F9/3802 , G06F9/3834 , G06F9/3859 , G06F9/467
摘要： A Conditional Transaction End (CTEND) instruction is provided that allows a program executing in a nonconstrained transactional execution mode to inspect a storage location that is modified by either another central processing unit or the Input/Output subsystem. Based on the inspected data, transactional execution may be ended or aborted, or the decision to end/abort may be delayed, e.g., until a predefined event occurs. For instance, when the instruction executes, the processor is in a nonconstrained transaction execution mode, and the transaction nesting depth is one at the beginning of the instruction, a second operand of the instruction is inspected, and based on the inspected data, transaction execution may be ended or aborted, or the decision to end/abort may be delayed, e.g., until a predefined event occurs, such as the value of the second operand becomes a prespecified value or a time interval is exceeded.

5. 发明申请

US20170116003A1 DYNAMIC DETERMINATION OF THE APPLICABILITY OF A HARDWARE ACCELERATOR TO A REQUEST 审中-公开
公开(公告)号：US20170116003A1
公开(公告)日：2017-04-27
申请号：US14923564
申请日：2015-10-27
申请人： International Business Machines Corporation
发明人： Amar Devegowda , Frank Haverkamp , Marcel Mitran , Anthony T. Sofia
IPC分类号： G06F9/445 , G06F9/46
CPC分类号： G06F9/44505 , G06F9/5033 , G06F2209/509
摘要： A method, system, and computer program product to dynamically determine the applicability of a hardware accelerator to a request for a function, the request including a set of blocks of input data, are described. Aspects include storing a decision of whether to use the hardware accelerator or a software module to execute the function based on a previously processed request and determining whether the request matches the previously processed request. Aspects also include processing the set of blocks of input data using the hardware accelerator or the software module according to the decision based on the request matching the previously processed request.

6. 发明申请

US20160350129A1 TRANSACTION ABORT INSTRUCTION 有权
公开(公告)号：US20160350129A1
公开(公告)日：2016-12-01
申请号：US15232299
申请日：2016-08-09
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Dan F. Greiner , Christian Jacobi , Marcel Mitran , Timothy J. Slegel
IPC分类号： G06F9/38
CPC分类号： G06F9/3861 , G06F9/30087 , G06F9/30101 , G06F9/3834 , G06F9/3859 , G06F9/3863
摘要： A TRANSACTION ABORT instruction is used to abort a transaction that is executing in a computing environment. The TRANSACTION ABORT instruction includes at least one field used to specify a user-defined abort code that indicates the specific reason for aborting the transaction. Based on executing the TRANSACTION ABORT instruction, a condition code is provided that indicates whether re-execution of the transaction is recommended.

7. 发明授权

US09335995B2 Convert to zoned format from decimal floating point format 有权
标题翻译：转换为十进制浮点格式的分区格式
公开(公告)号：US09335995B2
公开(公告)日：2016-05-10
申请号：US14560639
申请日：2014-12-04
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Steven R. Carlough , Reid T. Copeland , Charles W. Gainey, Jr. , Marcel Mitran , Eric M. Schwarz , Timothy J. Slegel
IPC分类号： G06F9/30
CPC分类号： G06F9/30181 , G06F7/483 , G06F9/3001 , G06F9/30025 , G06F9/30036 , G06F9/30098
摘要： Machine instructions, referred to herein as a long Convert from Zoned instruction (CDZT) and extended Convert from Zoned instruction (CXZT), are provided that read EBCDIC or ASCII data from memory, convert it to the appropriate decimal floating point format, and write it to a target floating point register or floating point register pair. Further, machine instructions, referred to herein as a long Convert to Zoned instruction (CZDT) and extended Convert to Zoned instruction (CZXT), are provided that convert a decimal floating point (DFP) operand in a source floating point register or floating point register pair to EBCDIC or ASCII data and store it to a target memory location.
摘要翻译：机器指令（本文称为长期转换分区指令（CDZT））并从分区指令（CXZT）扩展转换，从内存中读取EBCDIC或ASCII数据，将其转换为适当的十进制浮点格式，并将其写入到目标浮点寄存器或浮点寄存器对。此外，还提供将机器指令（本文称为长转换为分区指令（CZDT））和扩展转换为分区指令（CZXT），转换为源浮点寄存器或浮点寄存器中的十进制浮点（DFP）操作数与EBCDIC或ASCII数据配对，并将其存储到目标存储器位置。

8. 发明授权

US09158566B2 Page mapped spatially aware emulation of computer instruction set 有权
标题翻译：计算机指令集的页映射空间感知仿真
公开(公告)号：US09158566B2
公开(公告)日：2015-10-13
申请号：US13675011
申请日：2012-11-13
申请人： International Business Machines Corporation
发明人： Theodore J Bohizic , Reid T Copeland , Marcel Mitran , Ali I Sheikh
IPC分类号： G06F9/455
CPC分类号： G06F9/45545 , G06F2009/45583
摘要： Dynamic creation of a spatially aware emulation environment comprising Host cells of Host pages corresponding to Guest cells of Guest pages of Guest instructions. Each Host cell comprises a semantic routine for emulating a corresponding Guest instruction located at the corresponding Guest cell of the guest page.
摘要翻译：动态创建空间感知仿真环境，包括对应于Guest指令的Guest页面的Guest单元的Host页面的Host单元。每个主机单元包括用于模拟位于访客页面的相应访客单元处的相应访客指令的语义程序。

9. 发明申请

US20150121049A1 SAFE CONDITIONAL-LOAD AND CONDITIONAL-STORE OPERATIONS 有权
标题翻译：安全条件和条件存储操作
公开(公告)号：US20150121049A1
公开(公告)日：2015-04-30
申请号：US14482642
申请日：2014-09-10
申请人： International Business Machines Corporation
发明人： Marcel Mitran , Visda Vokhshoori
IPC分类号： G06F9/38
CPC分类号： G06F9/3861 , G06F8/4441 , G06F9/30043 , G06F9/30072 , G06F9/3804 , G06F9/46
摘要： One embodiment is a computer-implemented method for safe conditional operation when storage access cannot be proven safe. The method includes receiving a portion of source code for a transaction by an enhanced compiler and. The portion of source code received is analyzed, by the enhanced compiler, to determine whether the portion of source code is a candidate for transformation. Responsive to a determination that the portion of source code analyzed by the enhanced compiler is a candidate for transformation, the portion of the source code analyzed is transformed, by a computer processor, to use a conditional operation in a first portion of the transformed code. The conditional operation uses hardware transaction memory to invoke retry operations within hardware. A branch is added, directed to an original code portion, in a second portion of transformed code, where the branch is a recovery portion containing the original code portion.
摘要翻译：一个实施例是用于在不能证明安全的存储访问时安全条件操作的计算机实现的方法。该方法包括通过增强的编译器接收用于交易的源代码的一部分。通过增强编译器分析接收的源代码的部分，以确定源代码的部分是否是转换的候选。响应于确定由增强编译器分析的源代码的部分是用于变换的候选者，所分析的源代码部分由计算机处理器转换为在变换代码的第一部分中使用条件操作。条件操作使用硬件事务存储器来调用硬件中的重试操作。在转换代码的第二部分中添加指向原始代码部分的分支，其中分支是包含原始代码部分的恢复部分。

10. 发明授权

US08887003B2 Transaction diagnostic block 有权
公开(公告)号：US08887003B2
公开(公告)日：2014-11-11
申请号：US13789857
申请日：2013-03-08
申请人： International Business Machines Corporation
发明人： Dan F. Greiner , Christian Jacobi , Marcel Mitran , Timothy J. Slegel
IPC分类号： G06F11/00 , G06F11/36
CPC分类号： G06F11/3636 , G06F11/0724 , G06F11/0775
摘要： When an abort of a transaction occurs, a determination is made as to whether diagnostic information is to be stored in one or more transaction diagnostic blocks (TDBs). There are different types of transaction diagnostic blocks to accept diagnostic information depending on the type of abort and other considerations. As examples, there are a program-specified TDB in which information is stored if a valid TDB address is provided in a transaction begin instruction; a program interruption TDB, which is stored into when the program is aborted due to an interruption; and a program interception TDB, which is stored into when an abort results in an interception.

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