2 new Life Sciences libraries available
2 new libraries were recently released on Github which may be interesting for Life Sciences codes:Libxphi has been released on github. Libxphi adds offloading capabilities for BLAS3 functions to...
View ArticlePhi 7120P initialization issues and invalid revision ff
I am working to get an Intel 7120P up and running in an HP Z800 workstation with a 1110 W power supply. The board is plugged into a PCIe-x16 gen 2 slot and is connected to one of the PS' 6-pin...
View Articlehelp with hiding memory latency in linked cell algorithm
Hey guys,I am wondering if you could possibly give me any suggestions on how to hide the memory latency I am encountering in my xeon algorithm (line 120). The code loops over all cells, and for each...
View Articleattributes offload
for fortran there is an option of setting the functions/subroutines in an offload region as follows:!dir$ offload attributes: mic:: func_or_sub_nameI have two questions about this option:1) does it...
View ArticleCreating a direct ethernet path to Xeon Phi
Hi, We have a requirement to be able to pass traffic from an ethernet network directly on a Xeon Phi card installed on our host, bypassing the CPU and main memory of the host for performance reasons....
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The delay of frequency/voltage scaling
Dear all, I'm reading the MPSS3.3 source codes.In \drivers\micpm\mic_cpufreq.c, there are some definitions as following:#define K1OM_FREQ_DELAY 10 /* delay this many usecs, for each loop of the freq...
View ArticleWrong order of MPSS service in RHEL7: no NFS from host on boot
By default, in MPSS 3.4 and RHEL 7, the service mpss.service in multi-user.target starts before nfs.target. As a consequence, any NFS mounts from the host in mic0:/etc/fstab are not mounted after...
View ArticleMPSS 3.4 "micctrl --initdefaults" deletes /etc/mpss/micN.conf - SL6.5
I have a server with Scientific Linux 6.5 installed that has (2) Xeon Phi cards installed. I am trying to perform the initial setup for the MPSS 3.4 and installation required building from source to...
View Articleoffload_report
i am using offload_report at level 2, there we have mic time and cpu time. i have two questions about it:1) why they are different?2) which one should we use?thanks!
View ArticleSegmentation fault caused by unalignment
I'm trying to write some assemble programs on mic manually, but I'm really stuck by the forced alignment.For example, assume there's a double array whose elements start from the address addr, and it's...
View Articleinout
if i do as follows in fortran...integer,allocatable::a(:)...allocate(a(n))...!dir$ offload target(mic) inout(a)!$omp parallel do...inside the do loop a is being passed to subroutines and assigned...
View ArticleAbout GDDR5 memory channels on Coprocessors and user processes getting killed
Hi all,Actually, I am asking this more out of cruosity than need.I am using native mode on Xeon Phi coprocessor card (60 cores). What happens when cores issue too many memory writes? Normally (to my...
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icc15 produces 20% slower code than icc14
Hi all,I tried out the new Intel compiler (15.0.0 20140723) with a big intrinsics kernel on the MIC. The programs runs 20% slower than compared to icpc 14.0.3 20140422. I analyzed and attached the...
View ArticleMount a filesystem on a PCIe SSD over PCI direct?
Dear all,I am wondering if it is possible to directly mount a filesystem on a PCIe SSD over PCIe directly?If not, what are the alternatives? Is NFS via the host processor the only other solution?Best...
View ArticleProfermace Problem of Phi
Hi Charles Congdon,I am using Phi Coprocessor to doing a project. When I ran this function in CPU, 24 cores, the time is about 8.5 msec. But It ran about 700 msec pn Phi. In order to figure it our, I...
View ArticleNFS as RootDevice
Hi, Since we tried to use nfs export dir as RootDevice of Xeon Phi card. According to https://software.intel.com/sites/default/files/article/373934/system-adm..., we made changes as below.It seems...
View ArticleSecurity Advisory: Intel(R) MPSS affected by Shellshock bug
Recently there was a critical vulnerability exposed in the GNU* Bourne-Again Shell (Bash), the common command-line shell used in many Linux*/UNIX operating system. This vulnerability also affects...
View ArticleRequest for Xeon Phi kit
Dear All,I am interested in trying out the new release of LAMMPS for Intel Xeon Phi. I was wondering if there is a program through which I could obtain an evaluation version of the Xeon Phi, or if...
View Article280 slides on Xeon Phi programming
The slides for Colfax's 1-day training on Xeon Phi programming and optimization are now publicly available at http://research.colfaxinternational.com/post/2014/10/13/CDT-Slides.aspxThey contain much...
View ArticleIBIS model for 5th Gen Core i7
Hello,I am looking for an ibis model for a 5th Gen Core i7 Quad Core 2.x GHz processor.How can I get this model for performing my signal integrity and timing analysis?Best Regards,Hans Klos
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