Compiling a Shared Library with Offload Pragmas
Hey, I am having difficulties trying to compile simple programs with offload pragmas. I am testing out the tutorial found here...
View ArticleA member of a _Cilk_shared class can not access on MIC
Hi,Recently, I use _Cilk_shared and _Cilk_offload to offload my c++ code to MIC. The problem is I want to offload a class B, but a member of class B is an object of class A. When I offload class B, the...
View ArticleIntel MIC offload queuing
I am a beginner in this domain. I have the following query. In the hybrid mode of programming, MPI taks on host and opemp section offloaded to MIC, is there any queueing mechanism when many host MPI...
View ArticleCannot allocate memory using provider ofa-v2-scif0-u
Thank you in advance for any help with this.Description of ProblemAfter recently upgrading our system, we are unable to run code when using multiple mics on the same node or host cpu + mics on the same...
View Articleundefined reference to std::sort() in offload on mic
I want to execute std::sort() in offload method on MIC, the code as following:#include <stdlib.h> #include <algorithm> #define data_num 100000 #pragma offload_attribute(push,target(mic))...
View Articlex86_64-k1om-linux-ld: cannot find -lboost_system
I want to compile a procedure on Phi and CPU with MPI.The following is CPU makefile.I compile it and get success. 1 CC=mpiicpc 2 3 SSE=-xhost 4 5 CFLAGS = -O3 -I. $(SSE) -pthread -mcmodel=medium...
View ArticleIn-memory database engine on Xeon Phi processor
Hi, I am working on implementing and comparing performance of an in-memory database engine on Intel's Xeon Phi processor. However, being new to this, was wondering if there is anyone in this community...
View ArticleSCIF error
Hi, We have application in python which call to C++/C to scif to communicate with Fortran/C++ server on Xeon Phi (CPU <--> Xeon Phi on the same computer). This application runs one a month. In...
View ArticleCat not open file on Phi
This is my program,it is very simple. 1 #include <stdio.h> 2 #include <fcntl.h> 3 #include <unistd.h> 4 5 int 6 main(){ 7 8 int fd; 9 fd=open("./p",O_RDWR); 10...
View ArticleRH-6.4 + MPSS-3.6.1 + Intel 16.0.1 missing libcoi_device
Hi I have recently upgraded to MPSS-3.6.1 to make use of gcc 5.1 on the Phi but the linker of the offload code now fails trying to find libcoi_device It appears that this library is not...
View ArticleSegfault with asynchronous offload
HiI am facing a segmentation fault problem when I try to perform asynchronous offload at a later point which I believe is the time when the function returned.here is the codefunction A real ::...
View ArticleSegfault with asynchronous offload
HiI am facing a segmentation fault problem when I try to perform asynchronous offload at a later point which I believe is the time when the function returned.here is the codefunctionA real ::...
View ArticleSegfault with asynchronous offload
HiI am facing a segmentation fault problem when I try to perform asynchronous offload at a later point which I believe is the time when the function returned.here is the codefunctionA real ::...
View ArticleProfile events on xeon by using perf
Hi,I am doing some experiments using xeon and make a comparison between xeon and AMD, I am using perf in both machines. My concern is that the results of my events in xeon are thousand times higher...
View ArticleHow to put two Xeon Phis to work?
I recently acquired a system with dual xeon phi cards. How best to put both cards to work? At the moment, I can only afford the C++ Composer software -- so MPI isn't an option.
View ArticleMultiple MPI task offload to the same MIC.
Hi all,I am currently looking to offload from different MPI processor to the same MIC.The offloads are asynchronous in nature.What I would like to know is there a queue implemented by default that...
View ArticleHost to mic communication failing with DAPL provider ofa-v2-scif0
We are experiencing a problem while trying to use DAPL provider ofa-v2-scif0. Everything appears to work between mics on the same host, however jobs fail between host and mic. The scif appears to at...
View ArticleUsing a different floating point model for offload section
Hi,I am working on an application, where we can specify all the compiler flags, floating point models (eg -fp-model source etc.) etc, in the Macros file.In the code, I am offloading a certain section...
View ArticleMIC with Skylake Host
Student here starting a research project for the Xeon Phi. I need to upgrade my system before I can outfit it with my school-supplied Phis. I've looked everywhere, talked to Intel and Asus and nobody...
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1-Hour Webinar - "Developer’s Guide to Knights Landing”
Get Ready for Intel's Knights Landing As the leading provider of code modernization and optimization training, Colfax now offers a 1-hour webinar: “Introduction to Next-Generation Intel® Xeon Phi™...
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