• Question about the performance of a 7742 server

    Hello,  My question is in regards to the performance for a 7742 server and, in particular, to the HPCG benchmarks. Firstly, I'm following the "AMD - High Performance Computing: Tuning Guide for AMD EPYC 7002 Seri...
    last modified by afernandezody
  • Threadripper remote management

    Hi,   I have a customer who is looking to buy some workstation machines for some heavy lifting work. I have shown them and we tested a Threadripper based solution and they like it. However, one of the condition...
    last modified by hetzbh
  • Would a SP3 socket Epyc 7351P CPU work in a sTRX4 socket mobo?

    I've got a SP3 socket Epyc 7351P CPU and the availability of motherboards is kinda limited. I was hoping to find something that is small form factor. In doing some of reading, I found that Socket TR4, is physically id...
    last modified by diarmuid
  • Supermicro H12DST-B with dual EPYC 7702 downclocks to 400 Mhz

    We are seeing an issue where the EPUC 7702 downclocks to 400 Mhz and stay stuck at that clockspeed until a BMC reboot.  Is that a processor thermal trip protection?  Centos 8 does not report any processor th...
    last modified by sho1sho1sho1
  • Epyc 7282 Memory bandwidth issues

    Hello,   We seem to be having a problem with memory bandwidth using 2 Epyc 7282 CPUs with 4 DIMMS of HMA82GR7CJR8 RAM 16GB DDR4-3200 2Rx8 ECC REG DIMM HYNIX memory per socket on a Supermicro H11DSi board. We tri...
    last modified by ksistof_bortkevic
  • 7302P sitting at 1.7GHz idle

    New HPE DL325 Geb10 out of the box yesterday.  I need the idle speed to sit closer to the base speed, I have edited the WIN 2019 control panel power profile and the power/processor settings in the BIOS based on t...
    last modified by jfrost
  • Dual Socket EPYC 7702 64 cores shows 254 CPU online 1 CPU offline... Bad CPU?

    Hi all,   Trying to install CentOS 7 with Dual socket AMD EPYC 7702 64 cores server and it didn't work.  Then I tried CentOS 8 and installed, but lscpu shows core 255 offline?  Do I have a bad core tha...
    last modified by sho1sho1sho1
  • Do EPYC 7001 CPUs have to match in dual CPU systems?

    When building a dual CPU system with a pair of EPYC 7001 CPUs, do the CPUs have to match in any way. 1. Do CPUs have to be the same model. e.g. 7371 + 7371 as opposed to 7371 + 7451? 2. Do CPUs of the same model (e....
    last modified by deeplearner
  • Using Linux perf_event_open to sample load and store micro-ops from IBS

    Hi,   In my research, I need to sample memory access events and collect data related to these events, such as the accessed memory addresses, the thread ids that perform accesses, etc. I plan to do it by using pe...
    last modified by msasongko17
  • EPYC Rome's infinity fabric clock speed

    I'm considering to buy EPYC Rome(7002) platform. I want to know how determined EPYC Rome's Infinity Fabric On-Package(IFOP) clock speed. I only found this doc. https://developer.amd.com/wp-content/resources/56745_0.8...
    last modified by ubarey
  • What exact parts of the CPU are recorded by the RAPL registers?

    Hi,   I'm using an EPYC-7551 CPU on Ubuntu 18.04, Linux 4.15, and I see that there are 2 RAPL registers, CORE_ENERGY and PKG_ENERGY. Is there any documentation on which exact parts are recorded by these register...
    last modified by kkanungo17
  • Memory and CPU test Live ISO

    Hello AMD Team,   Is there a live ISO with which I can test the new hardware Memory and CPU? I am looking for a current linux live iso with current AMD tools included for this CPU type AMD 7742, 2.25 GHz, 64 cor...
    last modified by lha
  • AMDuProf.exe not starting

    Hi, AMDuProf.exe is not starting. No error messages are shown. EXE is visible in taskmanager for 1-2 seconds. Any advice?
    last modified by h.mueller@carat.de
  • AOCC 2.0.0 error

    While compiling hdf5-1.8.20 using AOCC 2.0.0 getting clang-8: error: unknown argument: '-soname' Any solution to this?
    last modified by nitinpatil85
  • Amd uProf 3900X

    Hi,   I am trying to do a Process profiling using AMD's uProf. After stopping the process, the profiler gets stuck on "Processing Data..." Anyone knows why this might be? Running latest version as of today
    last modified by spaceghost
  • uprof PowerProfiler Installation Failed on Ubuntu 18.04

    Hi, I'm trying to install μProf 3.1-35 on Ubuntu 18.04. While the existence of AMDPowerProfiler module is confirmed with lsmod, xxx@xxx:/opt/AMDuProf_3.1-35/bin# lsmod | grep AMD AMDPowerProfiler   ...
    last modified by microneko
  • Running MPI jobs effiiciently on 2 x AMD EPYC 7742

    I want to run 4 MPI jobs on 2 x AMD EPYC 7742 processors in the most efficient way.  Each job uses 64 threads.   A single job runs about 4 times more efficiently than running 4 jobs simultaneously.   I ...
    last modified by bwa
  • How to optimize running multiple jobs on dual AMD EYPC 7742

    I am running Ubuntu 18.04.3 with MPICH 3.3 and GFortran 7.4.0 and GCC 7.4.0 on dual AMD EPYC 7742 processors with hyper threading enabled.  My codes are written in MPI and Fortran.  The dual AMD processors h...
    last modified by bwa

    According to AMD Memory Encryption White Paper (https://developer.amd.com/wordpress/media/2013/12/AMD_Memory_Encryption_Whitepaper_v7-Public.pdf), a guest owner can provide a secret (such as a disk decryption key) in ...
    last modified by ehuang
  • core pmc event based profiling is not supported

    When I'm using uprof to profile hardware event on dell power edge r6415, the uprof gives a message: "core pmc event based profiling is not supported". I don't know is it because of ibs is not enabled. When I look into...
    last modified by aaltonen