Use this tag to ask questions about Intel® VTune™ Profiler, which is an advanced performance profiler to find and optimize performance bottlenecks across CPU, GPU, and FPGA systems.
Questions tagged [intel-vtune]
182 questions
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1 answer
Error After VTune Installation: Unable To Open X Display
From the download page, I have installed oneAPI Base Toolkit. I got the following Error Post Installation.
Error: Fontconfig warning: "/etc/fonts/fonts.conf", line 86: unknown element "blank"
…
Aishwarya
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- 4
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2 answers
About Intel-VTune Cores
I am new to Intel VTune. So, I have a general doubt.
I am trying to profile an application with VTune and would like to know the placement of VTune core.
How many cores does VTune take up while profiling an application?
Does it depend on OS?
Aishwarya
- 29
- 4
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1 answer
Trying to Perform Vtune Analysis Using Python 3.6
I am created Tensor Flow (1.15.5) environment using python 3.6
Model name: Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz
OS：Ubuntu 18.04.5 LTS
import tensorflow as tf
w1=tf.Variable(tf.random_normal(([2,3]),stddev=1.0,seed=1) ) …
Aishwarya
- 29
- 4
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1 answer
Vtune throws aps error while running MPI samples
I am trying to profile my MPI application using Intel Vtune. While trying to run the below two commands, I am getting error.
I_MPI_DEBUG=5.
I tried two things,
export I_MPI_DEBUG = 5
mpirun -np 4 aps ~/binary/vasp_std_2022
mpirun -genv…
Aishwarya
- 29
- 4
0
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1 answer
Intel VTune - Estimate data offload to GPU
I'm interested in estimate the data transfer, in terms of bytes, of an algorithm or function to be executed on a GPU using Intel VTune. For example, if my algorithm computes a multiplication between two vectors of 10 floats elements each, the result…
0
votes
1 answer
Vtune Memory Leak helper
I am using VTune to take memory statics for my app memory leak detection.
My Python app have a memory steady increase, it turns out there are "make_new_set" calls which keep creating python arena and seems cause memory leak.
But after my code…
Cesare Icarus
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Slow Float Multiplication in Fortran
I have a very basic Fortran question as I am a Fortran beginner. I'm using the following function:
real(8) function matchingformulaStk_c(ij,retwealth,iz,ctr,StockReturnM,stkEshare,stkNshare)
IMPLICIT NONE
integer, INTENT(IN) :: ij,iz,ctr
real(8),…
Tim de Silva
- 314
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1 answer
How can I make a function creating tens of thousands of symbolic filesystem links show up in VTUNE?
I'm profiling some binary on CENTOS 7.6 using VTUNE. I've yet to find the function (in vtune output) which is creating tens of thousands of symbolic file system links. And there is another one reading many such links, which I also cannot find. I…
Frank Puck
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vtune memory-access report showing incorrect output
I am running vtune -collect memory-access ./main and I receive the output below. The main binary does a lot of random memory accesses on a large virtual and physical memory range.
Memory Bound
LLC Miss: 0.0% of Clockticks
DRAM Bandwidth…
Jack Humphries
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How to get symbol info from libmlx5-rdmav2.so?
I am using Vtune to analyze my program. And the Vtune reports that
Function Module CPU Time % of CPU Time(%)
---------------------------- ----------------- --------- ----------------
func@0x23dc0 …
user503990
- 5
- 2
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1 answer
How can I aggregate intel amplifier batch results?
I'm solving a number of instances with my code and I'd need to find the worst hotspots, where "worst" is defined as a hotspot over a wide range of instances. So for every instance I have collected hotspot analysis data in batch mode using amplxe-cl.…
LaszloLadanyi
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1 answer
intel vtune show only splash but doesn't run
Install oneapi_vtune_p_2021.7.1.471_offline(windows) without errors. After run I see splash screen about 20 second and then nothing. I tried to reinstall, but nothing. Tried to remove folder "AppData\Roaming\Intel" nothing.
Running with vtune-gui…
Fobes Misterio
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1 answer
Intel VTune Profiler error for Mac: Cannot communicate with the target
I'm using Intel VTune on my personal MAC, to profile a remote application on a Linux server. I followed the instructions on https://software.intel.com/content/www/us/en/develop/documentation/get-started-with-vtune/top/macos.html.
When configuring…
Joxixi
- 651
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1 answer
sched_yield flagged as top hotspot
In analyzing a program with Vtune, I see that the libc function sched_yield is flagged as a significant hotspot.
Now I see that this function is roughly responsible for context switching; I say roughly because it's the first time I encounter this…
Lorah Attkins
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1 answer
Debugging GPU operation
I have a profile on VTune and it shows something running on the GPU (the line highlighted with the pale blue dot in the attached screenshot). How can I debug what in my codebase is running on there?
To clarify: when that highlighted line is…
easythrees
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