2 edition of Compiler-assisted multiple instruction rollback recovery using a read buffer found in the catalog.
Compiler-assisted multiple instruction rollback recovery using a read buffer
1993 by Coordinated Science Laboratory, College of Engineering, University of Illinois at Urbana-Champaign, National Aeronautics and Space Administration in [Urbana, IL], [Washington, DC .
Written in English
|Other titles||Compiler assisted multiple instruction rollback recovery using a read buffer.|
|Statement||N.J. Alewine ... [et al.].|
|Series||NASA contractor report -- NASA CR-193175.|
|Contributions||Alewine, Neal J., United States. National Aeronautics and Space Administration.|
|The Physical Object|
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ALEWINE ET AL.: COMPILER-ASSISTED MULTIPLE INSTRUCTION ROLLBACK RECOVERY USING A READ BUFFER strates the improvement gained by allowing either source bus access to either FIFO. Configuration B1 was the most efficient of. Compiler-Assisted Multiple Instruction Rollback Recovery Using a Read Buffer WORK UNIT ACCESSION NO.
PERSONAL AUTHOR(S) ALEWINE, N. J., S.-K. 13a. TYPE OF REP'ORT COVERED Technical. FROM TO SUPPLEMENTARY NOTATION Chen, W.
Fuchs, and W.-M. Hwu REPORTMay _a_Mocrth, Oa_ IS. PAGE31 CO. This paper describes compiler-assisted techniques to achieve multiple instruction rollback recovery. We observe that some data hazards resulting from instruction rollback can be resolved.
In the event of a rollback of N instructions, the contents of the read buffer are flushed in reverse order and stored back to the register file. For an on-path hazard, the path taken after the rollback will be the same as the path taken prior to rollback and each read of r, will produce the same value as before.
by the compiler. Compiler-based multiple instruction rollback reduces the requirement for data redundancy logic present in hardware-based instruction rollback approaches. Compiler-Assisted Instruction Rollback Compiler-based multiple instruction rollback resolves all data hazards using compiler transforma-tions.
Alewine, Compiler-assisted Multiple Instruction Rollback Recovery using a Read Buffer. PhD thesis, Tech.
Rep. CRHC, University of Illinois at Urbana-Champaign, PhD thesis, Tech. Rep. CRHC, University of Illinois at Urbana-Champaign, Cited by: 5. This paper describes compiler-assisted techniques to achieve multiple instruction rollback recovery. We observe that some data hazards resulting from instruction rollback can be resolved efficiently by providing an operand read buffer while others are resolved more efficiently with compiler.
Multiple instruction rollback (MIR) is a technique to provide rapid recovery from transient processor failures and was implemented in hardware by researchers. Compiler-assisted techniques to achieve multiple instruction rollback recovery are addressed.
It is observed that data some hazards resulting from instruction rollback can be resolved more efficiently by providing hardware redundancy while others are resolved more efficiently with compiler : Neal Jon Alewine.
Get this from a library. Compiler-assisted multiple instruction rollback recovery using a read buffer. [Neal J Alewine; United States. National Aeronautics and Space Administration.;].
Compiler-based MIR designs have also been developed which remove rollback data hazards directly with data flow manipulations, thus eliminating the need for most data redundancy hardware.
This thesis focuses on compiler-assisted techniques to achieve multiple instruction rollback by: C parallel recovery read buffer free. The parallel recovery coordinator is waiting for a log read buffer to be released by all recovery slaves.
Only after every recovery slave finishes applying redo from a log read buffer, can the buffer be used by the coordinator to issue the next log read.
Chen S, Alewine N, Kent Fuchs W and Hwu W () Compiler-Assisted Multiple Instruction Rollback Recovery Using a Read Buffer, IEEE Transactions on Computers,(), Online publication date: 1-Sep Abstract.
Multiple instruction rollback is a technique developed for recovery from transient processor failures. Speculative execution is a method to increase instruction level parallelism which can be exploited by both super-scalar and VLIW : W.
Kent Fuchs, Neal J. Alewine, Wen-mei Hwu. Experimental results indicate that, for a VLIW machine with P functional units to rollback N instruction words, a read buffer of 2NP entries with the compiler assist can be an effective approach in producing low overhead runtime performance and small code growth, for P = 4, 8, 12, and 16 and N \leq by: 6.
Hardware schemes such as reorder buffers, history buffers, future files , and micro- rollback  differ in where the updated and old values reside, circuit complexity, and rollback efficiency.
A compiler-assisted approach to implementing mul- tiple instruction retry has recently been developed by the authors [l]. Failure recovery using transactions • Independent rollback and restart Read-set and write-set tracked independently from parent On inner conflict, abort inner transaction but not outer • Map the write-buffer & read/write-set in virtual memory They become unbounded; they can.
The Evolution of Dependable Computing at the University of Illinois Dedicated to Professor Algirdas Avizienis R.
Iyer, W. Sanders, J. Patel, Z. Kalbarczyk Center for Reliable and High-Performance Computing Department of Electrical and Computer Engineering and Coordinated Science Laboratory University of Illinois at Urbana-Champaign.
ARIES Recovery Algorithm ARIES: A Transaction Recovery Method Supporting Fine Granularity Locking and Partial Rollback Using Write-Ahead Logging C. Mohan, D.
Haderle, B. Lindsay, H. Pirahesh, and P. Schwarz ACM Transactions on Database Systems, 17(1), Slides prepared by S.
Sudarshan 2 ©Silberschatz, Korth and Sudarshan Recovery Scheme. plementing rollback recovery when system errors occur a compile-time parameter. [ In case of a detected fault, the system is rolled back to a previous checkpoint containing a consistent This paper extends compiler-assisted multiple in-state of the system [5).
Advanced Recovery: Txn Rollback Rollback of transaction Ti is done as follows: Scan the log backwards 1. If a log record is found, perform the undo and log a special redo-only log record. If a record is found. Rollback the operation logically using the undo information U. Table shows how the average IPC and average AVFs change when all instructions in the instruction queue are squashed after a load miss in the L1 and the L0 caches .The simulated machine configuration is the same as used in ACE Analysis Using the Point-of-Strike Fault Model, p.
Chapter L0 cache is the smallest data cache closest to the processor pipeline. to data hazards that result from multiple instruction rollback, and that techniques used to resolve rollback data hazards are applicable to exception and branch repair.
The remainder of the paper is organized as follows. Section 2 gives a brief overview of a compiler-assisted multiple instruction rollback (MIR) scheme to be used.
©Silberschatz, Korth and SudarshanDatabase System Concepts, 5th Edition, Oct 5, Data Access (Cont.)Data Access (Cont.) Transaction transfers data items between system buffer blocks and its private work-area using the following operations: read(X) assigns the value of data item X to the local variable xi.
write(X) assigns the value of. The information in a rollback segment was used during database recovery for generating read-consistent database information and for rolling back uncommitted transactions for users. Space management for these rollback segments was complex, and Oracle has deprecated that method.
Checkpointing provides the backbone for rollback recovery (fault-tolerance), playback debugging, process migration and job swapping. Numerous checkpointing tools have been designed and implemented but few are based on SMP machines for MPI by: 1.
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Restore and Recovery Overview (SQL Server) 04/23/; 10 minutes to read +3; In this article. APPLIES TO: SQL Server Azure SQL Database Azure Synapse Analytics (SQL DW) Parallel Data Warehouse To recover a SQL Server database from a failure, a database administrator has to restore a set of SQL Server backups in a logically correct and meaningful restore sequence.
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Now I encounter ORA "Snapshot too old" error, but rollback tablespace still has so much of free space and only 6 extents are allocated for the rollback segment. and is using a small rollback segment.(like in your book - 1 on 1).Present SCN - for i in (select empid from emp where deptno = 10) loop instead of reading multiple.
Ł one reservation station, multiple entries Ł check source operands for RAW hazards Ł check structural hazards for separate integer, FP, memory units Ł execute instruction Ł result goes to reservation station & reorder buffer In-order commit Ł this & previous uops have completed Ł write ﬁGﬂPR registers Ł rollback on interrupts.
The information in a rollback segment was used during database recovery for generating read-consistent database information and for rolling back uncommitted transaction s for users. Space management for these rollback segments was complex, and Oracle has deprecated that method.
Rollback correctly handles transactions spanning multiple journal files created by journal switching; so, if possible, it is better to switch journal files than to stop journaling. You can stop journaling using the ^JRNSTOP routine or by selecting option 2, Stop Journaling, from the ^JOURNAL routine menu.
You should resize the vector in Allocate or use an inserter in the copy in Write. since you know how much space you need and you know you're going to use it all, you may as well do the former. at pm UTC.Use these tables to find message text, cause text, recovery text, and corresponding SQLCODEs and SQLSTATEs.
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Suggestions to consider for your [mysqld] section. max_connect_errors=10 # from 1 Million to frustrate hackers/crackers at 10 attempts innodb_lru_scan_depth= # from to conserve 90% of CPU cycles used for function read_buffer_size=K # from K to reduce handler_read_next RPS of 13.