インテル® スレッドチェッカー 3.1 Linux* 版

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そよひろき
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2 Intel's Terms and Conditions of Sale IntelIntel Intel Corporation * 2007 Intel Corporation JA JA : JA

3 1. primes 1 10,000 POSIX* API > source <path_to_tcheck_bin_directory>/tcheckvars.csh >. <path_to_tcheck_bin_directory>/tcheckvars.sh 3. primes GNU* C/C++ a. primes b. > make -g -o0 primes.gcc primesfixed.gcc POSIX API C++ Linux a. > source <path_to_compiler_bin_directory>/iccvars.csh >. <path_to_compiler_bin_directory>/iccvars.sh. b. (/opt/intel/itt) ITT_BASE tcheck Makefile JA/ 3

4 c. primes > make icc -g -o0.icc.icc.tc.icc.tc -tcheck :.icc -tcheck : "source iccvars.*" primes >./primes.gcc Determining primes from Found 1228 primes >./primes.gcc Determining primes from Found 1229 primes >./primes.gcc Determining primes from Found 1229 primes >./primes.gcc Determining primes from Found 1227 primes 1 10,000 1,229 4 : JA

5 2. 1 > source <path_to_tcheck_bin_directory>/tcheckvars.csh >. <path_to_tcheck_bin_directory>/tcheckvars.sh > tcheck_cl./primes.gcc Intel Thread Checker 3.1 command line instrumentation driver Copyright (c) 2006 Intel Corporation. All rights reserved. Building project Instrumenting 25% primes.gcc ( All Functions ):.. 75% libc so ( Minimal ): % libpthread-0.60.so ( Minimal ):.. Running: <path>/primes/primes.gcc Determining primes from Found 1229 primes Application finished... primes.gcc primes.gcc All Functions () Minimal () /tmp/<login_name>_tc_cl_cache JA/ 5

6 > tcheck_cl -d /home/sample_data primes.gcc > tcheck_cl --cache_dir /home/sample_data primes.gcc 6 : JA

7 3. ID Short Severity Count Context Description 1st Acc 2nd Acc Descri Name [Best] ess[bes ess[bes ption t] t] 1 Write Error 941 primes Memory read at primes.c: 41 c primes primes -> Rea.c:27 onflicts with a prior memory.c:42.c:41 d data write at primes.c:42 (flow de -race pendence) 2 Write Error 941 primes Memory read at primes.c: 42 c primes primes -> Rea.c:27 onflicts with a prior memory.c:42.c:42 d data write at primes.c:42 (flow de -race pendence) 3 Write Error 941 primes Memory write at primes.c:42 c primes primes -> Wri.c:27 onflicts with a prior memory.c:42.c:42 te dat write at primes.c:42 (output a-race dependence) 4 Write Error 1 primes Memory write at primes.c:41 c primes primes -> Wri.c:27 onflicts with a prior memory.c:41.c:41 te dat write at primes.c:41 (output a-race dependence) 5 Thread Informat 1 Whole P Thread termination at primes. primes primes termi ion rogram.c:61 includes stack alloca.c:61.c:61 nation 1 tion of and use of bytes ID 1 Write -> Read data-race ( -> ) Severity Name ( ) Error ( ) Count () Context[Best] ( []) Best () primes.c JA/ 7

8 Description () primes.c 42 1 (1st Access[Best] (1 [])) 41 (2nd Access[Best] (2 [])) ( ) primes.icc.tc ID Short Severity Count Context Description 1st Acc 2nd Acc Descri Name [Best] ess[bes ess[bes ption t] t] 1 Write Error 737 primes Memory read of primecount at primes primes -> Rea.c:27 primes.c:41 conflicts with a.c:42.c:41 d data prior memory write of primeco -race unt at primes.c:42 (flow depe ndence) 2 Count () Description () primecount 38 while ( (number % factor)!= 0 ) factor += 2; 39 if ( factor == number ) 40 { 41 primes[ primecount ] = number; 42 primecount++; 43 } primecount primes[] 4 8 : JA

9 1. 2. / 3. primes /opt/intel/itt/tcheck/samples/primes pthread_mutex_t cs;... void * findprimes ( void * arg ) {... } while ( (number % factor)!= 0 ) factor += 2; if ( factor == number ) { pthread_mutex_lock(&cs); primes[ primecount ] = number; primecount++; pthread_mutex_unlock(&cs); } primesfixed.c primesfixed.gcc C/C++ Linux primesfixed.icc primesfixed.icc.tc JA/ 9

10 4. : > tcheck_cl --help : tcheck/doc DiagnosticsGuide.pdf : tcheck/samples : tcheck/doc (Release_Notes.txt) : 10 : JA