https://community.intel.com/t5/Intel-Moderncode-for-Parallel/TSX-PEBS-profiling-is-not-accurate-enough/m-p/946389#M5105 <P>Hi everyone,</P> <P>&nbsp; &nbsp; I am recently working on a project that takes advantage of the intel TSX extension (RTM). Overall, &nbsp;the program works well except that there are occasions that there are some unexpected abortions due to memory conflict.&nbsp;The result is obtained both&nbsp;with the returned EAX register and&nbsp;PEBS profiling.</P> <P>&nbsp; &nbsp;At first, we suspect that the conflicts&nbsp;are&nbsp;induced from our programming mistakes. We have studied the Intel manual again and again, but could not find any clue.&nbsp;However, when we only run a single thread, conflict still happens. &nbsp;We now have to&nbsp;suspect PEBS for TSX is somehow not accurate enough.</P> <P>&nbsp; &nbsp;Do anyone know the details? If possible, how can I report&nbsp;this issue to the Intel engineer.</P> <P>&nbsp; &nbsp;The target CPU in&nbsp;our project is Intel core&nbsp;i7 4770S.</P> <P>&nbsp; &nbsp;Thanks all!</P> Fri, 27 Dec 2013 08:11:52 GMT le_g_1 2013-12-27T08:11:52Z https://community.intel.com/t5/Intel-Moderncode-for-Parallel/TSX-PEBS-profiling-is-not-accurate-enough/m-p/946389#M5105 <P>Hi everyone,</P> <P>&nbsp; &nbsp; I am recently working on a project that takes advantage of the intel TSX extension (RTM). Overall, &nbsp;the program works well except that there are occasions that there are some unexpected abortions due to memory conflict.&nbsp;The result is obtained both&nbsp;with the returned EAX register and&nbsp;PEBS profiling.</P> <P>&nbsp; &nbsp;At first, we suspect that the conflicts&nbsp;are&nbsp;induced from our programming mistakes. We have studied the Intel manual again and again, but could not find any clue.&nbsp;However, when we only run a single thread, conflict still happens. &nbsp;We now have to&nbsp;suspect PEBS for TSX is somehow not accurate enough.</P> <P>&nbsp; &nbsp;Do anyone know the details? If possible, how can I report&nbsp;this issue to the Intel engineer.</P> <P>&nbsp; &nbsp;The target CPU in&nbsp;our project is Intel core&nbsp;i7 4770S.</P> <P>&nbsp; &nbsp;Thanks all!</P> Fri, 27 Dec 2013 08:11:52 GMT https://community.intel.com/t5/Intel-Moderncode-for-Parallel/TSX-PEBS-profiling-is-not-accurate-enough/m-p/946389#M5105 le_g_1 2013-12-27T08:11:52Z