I have trouble with the Advanced Hotspots analysis on Win XP 64-bit using Visual studio 2010 with Intel(R) Visual Fortran Composer XE 2013 Update 3. I use VTune Amplifier XE 2013, Update 15 (build 328102).
I am running the parallel nqueens_fortran example. The Basic Hotspots analysis works as expected, and also the Advanced Hotspots analysis when I select only the "Hotspots" radio button. However, if I select "Hotspots, stacks and context switches" (and leave all other settings as they were), the problem shows up: The application runs fine, and completes in about 6 seconds. Still, VTunes reports the CPU time as zero, both in the summary, and for all functions in the top-down and bottom-up views.
I have tried lowering the sampling interval all the way down to 0.1 ms, and I have tried to run the case through the VTune GUI as administrator. Also, I tried to upgrade from Update 14 to 15, but the problem persists. Below, I have pasted the content of the summary tab and the command line copied from the analysis type tab.
Does anybody have suggestions for what might be the cause of these problems?
From the Summary tab:
Elapsed Time: 5.454s
CPU Time: 0s
Instructions Retired: 92,025,599,526
CPI Rate: 0.562
Wait Rate: 0.006
CPU Frequency Ratio: 0.000
Paused Time: 0s
Wait Time: 0.000s
Inactive Time: 8.672s
Overhead Time: 0s
Spin Time: 0s
[The CPU usage histogram shows only one column at 0 CPU.]
Collection and Platform Info
Application Command Line: D:\tmp\nqueens_fortran\nqueens_fortran\vf9\nqueens_parallel\Release\nqueens_parallel.exe 14
Operating System: Windows XP Professional x64 Edition
Computer Name: XXX.YYY.com
Result Size: 10 MB
Name: 45nm Intel(R) Core(TM) microarchitecture
Frequency: 2.8 GHz
Logical CPU Count: 8
The command line is:
"C:\Program Files (x86)\Intel\VTune Amplifier XE 2013\bin32\amplxe-cl" -collect-with runsa -knob enable-stack-collection=true -knob event-config=CPU_CLK_UNHALTED.CORE:sa=2830000,CPU_CLK_UNHALTED.REF:sa=2830000,INST_RETIRED.ANY:sa=2830000 -app-working-dir D:\tmp\nqueens_fortran\nqueens_fortran\vf9\nqueens_parallel\Release -- D:\tmp\nqueens_fortran\nqueens_fortran\vf9\nqueens_parallel\Release\nqueens_parallel.exe 14