https://community.intel.com/t5/Intel-Integrated-Performance/using-openmp-with-intel-IPP-V4-1-system-hang-up-error/m-p/863829#M8101 <DIV style="margin:0px;"></DIV> <BR />Hello,<BR /><BR />any specific reason you still use several year old IPP product? I would recommedn you to try the latest version which is IPP 6.1 update 2<BR /><BR />Regards,<BR /> Vladimir Fri, 11 Dec 2009 07:55:35 GMT Vladimir_Dudnik 2009-12-11T07:55:35Z https://community.intel.com/t5/Intel-Integrated-Performance/using-openmp-with-intel-IPP-V4-1-system-hang-up-error/m-p/863828#M8100 Hi, all<BR /><BR />I'm using intel IPP V4.1, and also set "Process OpenMP Directive" to QOpenMP touse openmp to do multi-threading in the same dll in my system. Passed building and linking. (My compiler is VS 2002 + intel compiler 9.0, runningin windows xp system, platform: intel Core2 DUO).<BR /><BR />System hangs up every time in runtime, the call stack from VS2002 is :<BR />ntdll.dll!_KiFastSystemCallRet@0() <BR />ntdll.dll!_ZwWaitForSingleObject@12() + 0xc <BR />kernel32.dll!_WaitForSingleObjectEx@12() + 0x8b <BR />kernel32.dll!_WaitForSingleObject@8() + 0x12 <BR />libguide40.dll!02013869() <BR />libguide40.dll!0201485c() <BR />libguide40.dll!0200440a() <BR />libguide40.dll!02004e57() <BR />libguide40.dll!02008fd9() <BR />libguide40.dll!02009adc() <BR />libguide40.dll!0200582d() <BR />libguide40.dll!0200b4b6() <BR />&gt; 3DCored.dll!bMakeImage(const VolumeQuad * <BR /><BR />the call stack from windbg is:ntdll!KiFastSystemCallRet<BR />ntdll!ZwWaitForSingleObject+0xc<BR />kernel32!WaitForSingleObjectEx+0xa8<BR />kernel32!WaitForSingleObject+0x12<BR />WARNING: Stack unwind information not available. Following frames may be wrong.<BR />libguide40!_kmpc_ssp_set_max_threads+0x179<BR />libguide40!_kmp_reap_worker+0x4ec<BR />libguide40!_kmp_wait_sleep+0x13e<BR />libguide40!_kmp_release+0xa27<BR />libguide40!_kmp_fork_call+0x39a1<BR />libguide40!_kmpc_invoke_task_func+0x194<BR />libguide40!_kmp_fork_call+0x1f5<BR />libguide40!_kmpc_fork_call+0x26<BR />3DCored!bMakeImage+0x1300<BR /><BR />Is anyboby can tell me the root cause? if this is related to my intel compiler openmp version and IPP Version? and if any requirement to using openmp in intel compilerwith iPP library V4.1?<BR /><BR />Thanks. Fri, 11 Dec 2009 07:18:27 GMT https://community.intel.com/t5/Intel-Integrated-Performance/using-openmp-with-intel-IPP-V4-1-system-hang-up-error/m-p/863828#M8100 wxlhb 2009-12-11T07:18:27Z https://community.intel.com/t5/Intel-Integrated-Performance/using-openmp-with-intel-IPP-V4-1-system-hang-up-error/m-p/863829#M8101 <DIV style="margin:0px;"></DIV> <BR />Hello,<BR /><BR />any specific reason you still use several year old IPP product? I would recommedn you to try the latest version which is IPP 6.1 update 2<BR /><BR />Regards,<BR /> Vladimir Fri, 11 Dec 2009 07:55:35 GMT https://community.intel.com/t5/Intel-Integrated-Performance/using-openmp-with-intel-IPP-V4-1-system-hang-up-error/m-p/863829#M8101 Vladimir_Dudnik 2009-12-11T07:55:35Z