User Guide

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Error Message: Problem Accessing the Sampling Driver

Linux* only error message:
Problem accessing the sampling driver. The driver may need to be (re)started.

Cause

Intel® VTune™
Profiler
cannot access the hardware event-based sampling (EBS) driver required to run a hardware event-based sampling analysis type. This problem happens if the sampling driver was not loaded or you do not have correct permissions.

Solution

Make sure the sampling drivers are loaded:
> lsmod | grep sep3_1
or
> lsmod | grep sep4_
> lsmod | grep pax
If the drivers are already loaded, make sure you are a member of the
vtune
user group. You can check the
/etc/group
file or contact your system administrator to find out if you are a member of this group.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804