offload error: cannot load library to the device 0 (error code 24)

[Sanchit_Misra]

Hi,

I am trying to run the offload example available in /opt/intel/composerxe/Samples/en_US/C++/mic_samples/intro_sampleC/. However, I get the following error:

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$ ./intro_sampleC.out
Samples started
Checking for Intel(R) Xeon Phi(TM) (Target CPU) devices...

Number of Target devices installed: 1

Offload sections will execute on: Target CPU (offload mode)

offload error: cannot load library to the device 0 (error code 24)

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I must add that I recently upgraded my mpss to version 3.1.2.

I have tried to go through manuals to figure out if I performed some step wrong and also looked in the forum and other places if anyone has reported this error. Some people have reported a similar error but with different error codes (5, 20), but I couldn't find any forum with the exact same one. It will be great if someone can help me on this issue.

Thanks,

Sanchit

[Kevin_D_Intel]

I’m not sure you have done anything wrong. According to my own antidote (here), this suggests COI_INVALID_FILE. I have received only one (internal) report of this error in the past.

What is your host OS name and version?
What is the version of the compiler used (icc -V)?

I will try MPSS 3.1.2 to see if this is reproducible.

[Sanchit_Misra]

Hi Kevin, Thanks for your message. Here are the details you asked for: OS: Redhat linux 6.2 $ icc -V Intel(R) C Intel(R) 64 Compiler XE for applications running on Intel(R) 64, Version 14.0.1.106 Build 20131008 Copyright (C) 1985-2013 Intel Corporation. All rights reserved.

[Kevin_D_Intel]

Hi Sanchit -  Thank you for those details.

I upgraded to MPSS 3.1.2 under the same host OS and using the same Composer the samples run successfully so it appears there is something unique about your system/setup that's trigger the error.

Where there any signs of trouble upgrading to MPSS 3.1.2?
Can you post the output of micinfo?

[Sanchit_Misra]

Hi Kevin, Please find the output of micinfo below. $ micinfo MicInfo Utility Log Created Wed Jan 29 23:08:27 2014 System Info HOST OS : Linux OS Version : 2.6.32-220.el6.x86_64 Driver Version : 3.1.2-1 MPSS Version : 3.1.2 Host Physical Memory : 16410 MB Device No: 0, Device Name: mic0 Version Flash Version : 2.1.02.0390 SMC Firmware Version : 1.16.5078 SMC Boot Loader Version : 1.8.4326 uOS Version : 2.6.38.8+mpss3.1.2 Device Serial Number : IWKC21900133 Board Vendor ID : 0x8086 Device ID : 0x225c Subsystem ID : 0x2500 Coprocessor Stepping ID : 1 PCIe Width : x16 PCIe Speed : 5 GT/s PCIe Max payload size : 256 bytes PCIe Max read req size : 4096 bytes Coprocessor Model : 0x01 Coprocessor Model Ext : 0x00 Coprocessor Type : 0x00 Coprocessor Family : 0x0b Coprocessor Family Ext : 0x00 Coprocessor Stepping : B0 Board SKU : ES2-P/A/X 1750 ECC Mode : Enabled SMC HW Revision : Product 300W Active CS Cores Total No of Active Cores : 61 Voltage : 955000 uV Frequency : 1090909 kHz Thermal Fan Speed Control : On Fan RPM : 2700 Fan PWM : 50 Die Temp : 41 C GDDR GDDR Vendor : Elpida GDDR Version : 0x1 GDDR Density : 2048 Mb GDDR Size : 7936 MB GDDR Technology : GDDR5 GDDR Speed : 5.500000 GT/s GDDR Frequency : 2750000 kHz GDDR Voltage : 1501000 uV

[Kevin_D_Intel]

Thank you. That all looks good.

I have another lead. I just re-created this error by intentionally corrupting a known file (offload_main) that is loaded to the card when the sample starts. I’m wondering if perhaps this file on your system has somehow become corrupted. It is a part of the Composer XE 2013 SP1 “lib/mic” collection.

Can you paste into a reply the output of this command:   ls -l /opt/intel/composer_xe_2013_sp1/lib/mic/offload_main

If you happen to have an earlier Composer XE 2013 SP1 version still installed, could you try building the sample using it to see whether the error persists?

[Sanchit_Misra]

Thanks Kevin. Here is the information you asked for. $ ls -l /opt/intel/composer_xe_2013_sp1/lib/mic/offload_main -rwxr-xr-x 1 root root 39668 Oct 11 14:07 /opt/intel/composer_xe_2013_sp1/lib/mic/offload_main I don't have any installation of previous versions of composer_xe_2013_sp1.

[Kevin_D_Intel]

Hi Sanchit,

Having not heard from you further, either here or in reply to my private message, I am hoping that means you resolved this issue. If you did resolve this then I am curious to know what you found was the cause and/or what you did to resolve this issue. If the issue is not resolved, then please look to my private reply and I will try to be of further help in resolving this.

Thank you,
Kevin

[Sanchit_Misra]

Hi Kevin,

Thanks for your suggestions and follow up. Unfortunately, I have not been able to try your suggestion. I moved to a different machine since I had issues with the previous one. The new machine works seamlessly. :)

I will try to use the older machine and try your idea and get back to you.

Thanks,

Sanchit

[Kevin_D_Intel]

Hi Sanchit, good to hear back from you. Glad to hear you have another system to use and since you have that convenience then for the system having this issue I suggest uninstalling both the Intel Composer XE and MPSS and re-installing them again. While it seems like some aspects are working on this problematic system, I don't think it’s worth trying to dissect the issue if you can clear the problem by reinstalling those two packages. You probably also know there is a new Composer XE 2013 SP1 Update 2 available now also. Not required that you upgrade for the problematic system, just wanted to note its availability.