automatically exploiting cross-invocation parallelism using runtime ...
automatically exploiting cross-invocation parallelism using runtime ... automatically exploiting cross-invocation parallelism using runtime ...
Algorithm 2: Pseudo-code for worker< depTid, depIterNum > ← consume()while depTid ≠ NO SYNC dowhile latestFinished[depTid] < depIterNum dosleep()< depTid, depIterNum > ← consume()doWork(depIterNum)latestFinished[getTid()] ← depIterNumfor worker thread T2 to finish iteration I2 (wait until latestFinished[T2] ≥ I2).Worker thread T1 then consumes the (NO SYNC,I3) and begins execution of iterationI3.Using this synchronization scheme, instead of stalling both threads to wait for firstinvocation to finish, only thread T1 needs to synchronize while thread T2 can move on toexecute iterations from the second invocation.32
OriginalGeneratedInvoc. Iter. Access Sched. Combined Iter.shadow- - - - initialize 〈⊥, ⊥〉 , 〈⊥, ⊥〉 , 〈⊥, ⊥〉 , 〈⊥, ⊥〉1 1 A1 T1 I1 〈⊥, ⊥〉 , 〈T1, I1〉 , 〈⊥, ⊥〉 , 〈⊥, ⊥〉1 2 A3 T2 I2 〈⊥, ⊥〉 , 〈T1, I1〉 , 〈⊥, ⊥〉 , 〈T2, I2〉2 1 A3 T1 I3 〈⊥, ⊥〉 , 〈T1, I1〉 , 〈⊥, ⊥〉 , 〈T1, I3〉2 2 A2 T2 I4 〈⊥, ⊥〉 , 〈T1, I1〉 , 〈T2, I4〉 , 〈T1, I3〉(a)!" # # (b)Figure 3.5: Scheduler scheme running example: (a) Table showing original invocation/iteration,array element accessed in iteration, thread the iteration is scheduled to, combinediteration number, and helper data structure values (b) Execution of the example.33
- Page 1 and 2: AUTOMATICALLY EXPLOITINGCROSS-INVOC
- Page 4 and 5: techniques. Among twenty programs f
- Page 6 and 7: in particular. Their professionalis
- Page 8 and 9: ContentsAbstract . . . . . . . . .
- Page 10 and 11: 4.5.4 Load Balancing Techniques . .
- Page 12 and 13: 2.4 Sequential Loop Example for DOA
- Page 14 and 15: 4.5 Overview of SPECCROSS: At compi
- Page 16 and 17: 1.1 Limitations of Existing Approac
- Page 18 and 19: advanced forms of parallelism (MPI,
- Page 20 and 21: the graph stands for an iteration i
- Page 22 and 23: 1.2 ContributionsFigure 1.5 demonst
- Page 24 and 25: 1.3 Dissertation OrganizationChapte
- Page 26 and 27: alias the array regular via inter-p
- Page 28 and 29: 1 for (i = 0; i < M; i++){2 node =
- Page 30 and 31: 1 cost = 0;2 node = list->head;3 Wh
- Page 32 and 33: example which cannot benefit from e
- Page 34 and 35: These techniques are referred to as
- Page 36 and 37: unnecessary overhead at runtime.Tab
- Page 38 and 39: Chapter 3Non-Speculatively Exploiti
- Page 40 and 41: for a variety of reasons. For insta
- Page 42 and 43: 12x11x10xDOMOREPthread Barrier9xLoo
- Page 44 and 45: Algorithm 1: Pseudo-code for schedu
- Page 48 and 49: 3.3 Compiler ImplementationThe DOMO
- Page 50 and 51: to T i . DOMORE’s MTCG follows th
- Page 52 and 53: Outer_Preheaderbr BB1ABB1A:ind1 = P
- Page 54 and 55: Algorithm 3: Pseudo-code for genera
- Page 56 and 57: Scheduler Function SchedulerSync Fu
- Page 58 and 59: SchedulerWorker1 Worker2Worker3Work
- Page 60 and 61: 3.5 Related Work3.5.1 Cross-invocat
- Page 62 and 63: ations during the inspecting proces
- Page 64 and 65: for (t = 0; t < STEP; t++) {L1: for
- Page 66 and 67: sequential_func() {for (t = 0; t <
- Page 68 and 69: Workerthread 1Workerthread 2Workert
- Page 70 and 71: library provides efficient misspecu
- Page 72 and 73: Workerthread 1TimeFigure 4.6: Timin
- Page 74 and 75: 4.2 SPECCROSS Runtime System4.2.1 M
- Page 76 and 77: takes up to 200MB memory space.To d
- Page 78 and 79: checkpoint, the child spawns new wo
- Page 80 and 81: Operation DescriptionFunctions for
- Page 82 and 83: Main thread:main() {init();create_t
- Page 84 and 85: implemented in the Liberty parallel
- Page 86 and 87: Algorithm 5: Pseudo-code for SPECCR
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- Page 92 and 93: Source Benchmark Function % of exec
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Algorithm 2: Pseudo-code for worker< depTid, depIterNum > ← consume()while depTid ≠ NO SYNC dowhile latestFinished[depTid] < depIterNum dosleep()< depTid, depIterNum > ← consume()doWork(depIterNum)latestFinished[getTid()] ← depIterNumfor worker thread T2 to finish iteration I2 (wait until latestFinished[T2] ≥ I2).Worker thread T1 then consumes the (NO SYNC,I3) and begins execution of iterationI3.Using this synchronization scheme, instead of stalling both threads to wait for first<strong>invocation</strong> to finish, only thread T1 needs to synchronize while thread T2 can move on toexecute iterations from the second <strong>invocation</strong>.32
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