Phi Supported Motherboards
Hi,I've just bought a Phi as part of the promotion and am looking to do some code optimization and energy measurement on it. I need to build a workstation and have been looking at appropriate...
View Articleover-heating issues
I have a 31S1p which over-heats. I put a 70 CFM fan in the front of it, and built a duct, as was suggested in this forum. I put a 40 CFM fan on the back, and the card still over-heats. I even tried...
View ArticlePower for multiple Xeon Phi cards
Hi,System: Ubuntu 14.01 LTS, MPSS 3.4.1We have a server with 2KW power supply, which the manufacture claims support up to 6 Xeon Phi Cards.When I run my program on Xeon Phi (31S1P) uses all the cores...
View Articlescif_open: Permission denied
Hi,System: Ubuntu 14.04.1 LTS, MPSS 3.4.1, parallel_studio_xe_2015_update1 and g++ (Ubuntu 4.8.2-19ubuntu1) 4.8.2.I am trying to use scif for communication with mic. However on the host node, I got...
View ArticleSCIF_FENCE_INIT_SELF vs SCIF_FENCE_RAS_SELF
The SCIF PDF mentions "SCIF_FENCE_RAS_SELF" while the scif.h header file mentions SCIF_FENCE_INIT_SELF as options to the flags argument of scif_fence_mark( .. int flags ...)Which one is it?As a follow...
View ArticleFaulty code with icc and OpenMP (-O2)?
Hi, please consider the example below, which is the minimal crashing example I could create. This is seems issue which we observe in at least 2 of our applications on the MIC. I did not manage to...
View Articlepci-e mounting brackets needed
For some reason my (passively cooled) Xeon Phi cards don't have the pci-e mounting brackets with them...Is there someone who has installed several of these devices into a chassis where they didn't need...
View ArticleCan't disable ECC via micsmc command
Hi all,I failed to disable ECC by "micsmc --ecc disable", the output is:Information: disabling ECC on devices: mic0...Information: 1 of 1 completeStatus: mic0: error: cannot set ECC mode: device is not...
View ArticleOFED-MIC IPoIB, RDMA
Hi,I have OFED-MIC-3.5.2 with MPSS 3.4 and RHEL-7 running. When I do ibv_devices, ibv_deviceinfo I do see the scif interface as shown below. How do I run RDMA and IPoIB applications on this interface?...
View ArticleXeon Phi Performance / Energy Tradeoff Issues
HiI have been doing experiments on Xeon Phi and ran an fibonacci(40) application with varied number of core allocations (i.e. number of cores). The energy consumption was measured through...
View ArticlePhtrhead + offload
Hi I create a new thread and lanch offload code in this thread but I get this error codeoffload error: cannot get function handles on the device 8117264 (error code 14) The code likes as...
View ArticleUsing MKL switch brings "relocation R_X86_64_32" error
I have working test project (based on Kevin's sample code from another thread). I just changed in the VS 2013 Intel Performance Libraries -> Use MKL -> Parallel (was None) and got this error....
View ArticleCould not read symbols: File in wrong format
Hi,I have a solver that works fine on the host side. Now I am trying to first build executable for MIC and run natively there. I am using ifort 14.0.3 and I added the compiler flags -openmp and -mmic...
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__MIC__ macro does not work
Hello everyone, To solve problems like this: undefined reference to `_mm512_xxx_xxx(), I have added __MIC__ macro into my...
View ArticleMPI programs dont run on MIC's across nodes or within the nodes
I am using the intel MIC to run sample MPI programs currently.The program is a simple hello world program.#include <stdio.h> #include <mpi.h> int main (argc, argv) int argc; char...
View ArticleUsing L1/L2 cache as a scratchpad memory
Dear all,Explicitly cache control is a one of important feature in Xeonphi (MIC). How could I use the L1 or L2 as scratchpad memory and also sharing them data between the cores?In addition, is there...
View ArticleRuning linpack with native mode
Hi all,I tried to run HPL with native mode, ( I am using the pre-compiled binaries and run script in MKL)I set OMP_NUM_THREADS and MKL_NUM_THREADS, but I only find one thread running on MICDo you have...
View ArticleXeon Phi Power Management: Controlling C-states through Userspace
HiI have been trying to develop a runtime energy management library for Intel Xeon Phi using idle state control (C-states). I have read through a few blogs but I could not find answers to the...
View ArticleHow MIC works
Hi,I was wondering how does the application work in the MIC (native mode)? Namely, how doing the program land in each core and precisely in the thread?Thanks in advance.
View ArticleStatus of threads
Hi,How do I know the status (busy or idle) of threads or core in MIC? Is there any register to track thread's status?Thanks in advance
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