problem using array arg on MIC in subroutine
This example is a very shortened version of what I am trying to do in real code. I am trying to put an array on MIC, then pass the array to a routine on the host, then do a loop in the routine on the...
View ArticleBooting a third party OS on MIC
Hi there:Recently I'm trying to port Barrelfsih, which is a multi-kernel operating system designed for many-core platform by MS and ETH, to Xeon Phi. I start with booting a simple program at...
View ArticleExternal bridge and NFS problems
Hi,I've setup an external bridge for my MICs and they can see IPs on the same subnet that they are on (off the host that they're on). Which is great news.However, my NFS server is on a different...
View ArticleAbstraction and Cilk_shared
Hi, Is there any way to use abstraction and _Cilk_shared. In normal C++ you can just do abstract_class * classp; classp = new base_class(); To use new using _Cilk_shared one must perform a vector to...
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Using poniters whith “into” in Intel Xeon Phi offload directive
According to the book " Intel Xeon Phi Coprocessor High-Performance Programming", we can move data from one variable to another. I tried to follow the example and I found it worked:Code: program...
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Using poniters whith “into” in Intel Xeon Phi offload directive
According to the book " Intel Xeon Phi Coprocessor High-Performance Programming", we can move data from one variable to another. I tried to follow the example and I found it worked:Code:<code>...
View ArticleMIC offload using C++
Hello,I am trying to port a C++ code using the offload mic directives. I have developed a toy code,but I cannot manage offload computations using member classes. The code I am working on is provided...
View ArticleNew Tools: Simple Performance Tools for the Intel® Xeon® processor line and...
Larry Meadows from Intel Corporation has developed two simple tools for the Intel® Xeon® processor line as well as the Intel® Xeon Phi™ coprocessor that allow a user to determine how well their...
View ArticleIntel(R) MPSS 3.1 (based on Yocto) released!
A major release of Intel® MPSS, version 3.1 for Linux, is now available at http://software.intel.com/en-us/articles/intel-manycore-platform-software-stack-mpssThings you need to know: This release,...
View ArticleQuad precision architecture one day?
Hello.I have a dream in which the IEEE-754 quad precision is implemented in hardware in order to allow fast extended precision computation in a portable way instead of the current 80-bit extended...
View Articleinetd has been removed from busybox in mpss 3.1
My program needs inetd daemon to start my services. But I found the inetd was removed from busybox which was shipped in mpss 3.1. It's a compatibility issue since the busybox which was shipped in...
View ArticleCan not ping to mic when using Internal bridge
When I was using Internal bridge, sometimes (not sure how to recreate it) after reseting configuration of mic, I could NOT ping to the mic. On mic, from ifconfig command, there were a lot of dropped...
View ArticleRebuild ofed-driver-3.1-0.1.build0.fc13.src.rpm
Hello,I have successfully installed MPSS 3.1 on CentOS 6.4, and everything is working fine with the stock kernel. I want to update the kernel, so I tried to rebuild ofed drivers with rpmbuild --rebuild...
View ArticlePointer to shared warnings
Hi when I compile the code below I get warnings stating that data1 and data2 are not pointers to shared data, how can I remove these warnings (the code seems to run correctly).Here is the source code...
View ArticleHow to find the reason for poor scalability?
Hello, I am running some multithreaded benchmark programs in Mic. Some programs don't scale beyond 32 threads and some beyond 64. I am trying to find out the reason why they are not scalable beyond...
View ArticleCompile MPSS on SL 6.4 with realtime kernel - 3.8.13-rt14.25
Hello, I would like to compile MPSS on Scientific Linux 6.4 with MRG realtime (Kernel: 3.8.13-rt14.25.el6rt.x86_64). I tried to perform the instructions in the user guide in section 8.1...
View ArticleBuilding a boost library for MIC
Hello,My C++ code uses boost program_options in main() to read command line options. Later in the code I want to offload some computations on MIC.Using -offload-option,mic,compiler,"-zdefs", I figured...
View ArticleHow to configure the Performance Monitoring Units (PMUs)
Hi,Recently I meet the problem about how to configure the PMUs on Xeon Phi.According to the document named "Intel® Xeon Phi™ Coprocessor (codename: Knights Corner) Performance Monitoring Units", it...
View ArticleOpenCL and Bandwidth
I'm trying to get maximum/high memory bandwidth with a Stream like benchmark based on OpenCL. The maximum performance I am able to achieve seems to be about 35GB/s. With the same benchmark on Nvidia...
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Flash Issues & Remedies
The attached document describes some common issues and questions that have been reported and how they might be addressed.AttachmentSizeDownloadFlash FAQ.pdf358.36 KB
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