Hello, I wonder if anyone has encountered this, I downloaded the new Cilk View:

~ > cilkview -v cilkview v2.0.2516.0 Copyright (c) 2010 Intel Corp. All rights reserved

Running on one program on one core (CILK_NWORKERS=1) I obtained the following output:

cilkview: generating scalability data Cilkview Scalability Analyzer V2.0.0, Build 2516 ... Whole Program Statistics 1) Parallelism Profile Work : 437,977,330 instructions Span : 2,278,999,561 instructions Burdened span : 47,101,564,561 instructions Parallelism : 0.19 Burdened parallelism : 0.01 Number of spawns/syncs: 6,008,152 Average instructions / strand : 29 Strands along span : 12,016,305 Average instructions / strand on span : 189 Total number of atomic instructions : 6,622,022 Frame count : 12,201,224 2) Speedup Estimate 2 processors: 0.01 - 0.19 4 processors: 0.01 - 0.19 8 processors: 0.01 - 0.19 16 processors: 0.01 - 0.19 32 processors: 0.01 - 0.19 64 processors: 0.01 - 0.19 128 processors: 0.01 - 0.19 256 processors: 0.01 - 0.19 Cilk Parallel Region(s) Statistics - Elapsed time: 0.101 seconds 1) Parallelism Profile Work : 18,446,744,073,227,519,056 instructions Span : 1,358,989,671 instructions Burdened span : 46,181,554,671 instructions Parallelism : 13573866282.33 Burdened parallelism : 399439650.84 Number of spawns/syncs: 6,008,152 Average instructions / strand : 1,229,416,080,456 Strands along span : 6,008,152 Average instructions / strand on span : 226 Total number of atomic instructions : 6,622,022 Frame count : 12,201,224 Entries to parallel region : 563 2) Speedup Estimate 2 processors: 1.90 - 2.00 4 processors: 3.80 - 4.00 8 processors: 7.60 - 8.00 16 processors: 15.20 - 16.00 32 processors: 30.40 - 32.00 64 processors: 60.80 - 64.00 128 processors: 121.60 - 128.00 256 processors: 243.20 - 256.00

It also happened for 4-5 other programs. I wonder if this is a common bug, do I need to submit my program as test case somewhere?

Cheers,
Zhunping