search for: vtune

Hi, I try to install vtune on centos7, which shows the following message: Xorg X11 libXss runtime library is not found. 'Graphical user interface' component of VTune Amplifier cannot be installed. The install program cannot detect the Xorg X11 libXss runtime library required by the graphical user interface of the p...

Full_Name: R User Version: 2.7.2 (default binary) OS: Windows XP SP2 Submission from: (NULL) (83.25.29.163) Hello! I have conducted following experiment running simple R script: for (i in 1:10000) { a<-0 for (j in 1:1000) a<-c(a,j) } profiled R.dll using Intel Vtune and obtained following results!!! Func. Name Clocticks locale2charset 46,58% R_RunWeakRefFinalizer 20,85% Rf_eval 8,77% Rf_eval takes only about 9% of CPU time, a huge overhead on checking locale character set!!! It seems that is the problem with family of funct...

...ut i'm about to go find out. > > Is it possible to profile the code on my x86 workstation, or does it > absolutely have to be run on the machine? ARM emulator anyone? :) <p>Intel designed performance monitoring hardware into the XScale. They also have a profiling tool called VTune that consists of some "data collector" code running on the XScale target, and a windows host application that collects the data from the target and displays it graphically, etc. http://www.intel.com/software/products/vtune/xscale/vtunex_oview.htm But the web site says it targets the...

I believe the perf tool cannot profile/analyze the JITed code in MCJIT model. Can you please confirm this ? I was working on a patch to fix this. Another question, is the there any support to map the llvm IR with x86 generated assembly ? so its easier to analyze the code generator. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Jean-Marc Valin wrote: > At this point, if you want to help, the best way would probably to try > tracking done what part of the code is responsible for the high system. > Once this is identified, we'll have a much better idea. > > I managed to log on the XSCALE 400 on handhelds.org. It helped, but I > can't do everything with it (and by attempts at profiling failed). I

Hi, Keir, Currently, HVM guests do not have access to performance counters. So it is not possible to use performance analyzer software such as vtune in HVM guest to analyze programme performance. Other usage of performance counters , for example, the NMI watchdog, won''t function either. This patch will enable performance counters in HVM guest. Currently, only Core 2 Duo is implemented. Tests are carried out using Intel Vtune Performanc...

On Tue, Apr 16, 2019 at 11:02 AM qw <applemax82 at 163.com> wrote: > Hi, > > > I try to install vtune on centos7, which shows the following message: > > > Xorg X11 libXss runtime library is not found. 'Graphical user interface' > component of VTune Amplifier cannot be installed. > The install program cannot detect the Xorg X11 libXss runtime library > required by the graph...

...porting my commercial interests), I would like to give back, if possible. Where I can contribute: 1. SCAN / PREVENT Stability and Threat analysis (big open source presence supported by coverity) 2. Intel Threaded Building Blocks library support to leverage multicore CPUs (plan now for 8-way) 3. VTune analysis/cache optimization for identification of loop unrolls, etc. All this would be on linux (Fed8 at present), except I do have an Intel compiler on Win if it was needed, would need to find fortran compiler, make lots of adjustments, I suspect. I've already started on #3 and would only t...

...ne assembly code that inserts the correct number of NOP instructions. Alternatively, if your processor has the necessary performance counter registers, you could simply measure the change in cache performance between the instrumented and uninstrumented code. For x86_64 processors, you can use VTune (which will sample the performance counter registers) or you can use the perfctr Linux kernel patch and tools to get a precise measurement. -- John T. > > Thanks > > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu...

Unfortunately, I've ran into a second issue where addpd is being performed on memory that isn't 16 byte aligned. Again, this only happens if the createJIT OptLevel is set to Default (vs None). According to http://www.jaist.ac.jp/iscenter-new/mpc/altix/altixdata/opt/intel/vtune/doc/users_guide/mergedProjects/analyzer_ec/mergedProjects/reference_olh/mergedProjects/instructions/instruct32_hh/vc8a.htm that will cause a GPF. I've attached the LLVM IR and a copy of the Disassembly this results in. The crash occurs at 00370872 At the time of the crash, ESP is set to 0018...

Hi Priyendra, There is support for oprofile and Intel(r) VTune(tm) Performance Analyzer, but either one needs to be explicitly turned on during the build process. If you use MCJIT (as opposed to the older JIT) then oprofile support isn't in place yet. Both of these work by providing a JITEventListener that receives notification when new code is emitted a...

Hello all, I have developed a instrumented pass which insert some variables between the original variables, as well as insert some code into the original source code. just like: ============= original source code ============= int a[10]; void fun1 () { // some source code here } ========================================= ============= instrumented source code ============= int

Hey guys, I am currently working on a project that uses JIT compilation to compile incoming user requests to native code. Are there some best practises related to profiling the generated code? My project uses gperftools pprof for profiling etc. Is there a way to hook the two up? Are there any other profiling method that works? This page describes how to debug JIT code with GDB. I wonder if

...w, when MCJIT emits an object image, it broadcasts an event to any registered listeners indicating that an object was emitted, passing an ObjectImage reference as the parameter to the listener. The only current listener I'm aware of is the IntelJITEventListener, which wants to notify the Intel VTune Amplifier (if present) about the newly JITed functions. The listener uses the ObjectImage interface (which is modeled after the ObjectFile interface) to walk through the symbols in the object and look for functions, getting their address and size from the SymbolRef interface. So far, so good, and...

...th --enable-optimized. Will --with-oprofile work fine with that or should I disable optimized? Regards, -- Priyendra On Mon, Mar 4, 2013 at 11:54 AM, Kaylor, Andrew <andrew.kaylor at intel.com>wrote: > Hi Priyendra,**** > > ** ** > > There is support for oprofile and Intel® VTune™ Performance Analyzer, but > either one needs to be explicitly turned on during the build process. If > you use MCJIT (as opposed to the older JIT) then oprofile support isn’t in > place yet.**** > > ** ** > > Both of these work by providing a JITEventListener that receives &g...

...its an object image, it broadcasts an event to any > registered listeners indicating that an object was emitted, passing an > ObjectImage reference as the parameter to the listener. The only current > listener I’m aware of is the IntelJITEventListener, which wants to notify > the Intel VTune Amplifier (if present) about the newly JITed functions.*** > * > > ** > OK. > ** > > > > The problem is that I have a test case that is trying to reference an > inlined function. In this case, the generated object puts the ‘inlined’ > function in a separate sect...

...instructions that are > causing this Well, you could time it, though, doing that alters the code of course. Small time, in cache, bigger time, in farther away cache, bigger time, in dram, bigger time, page fault. No one in the real world does this. Instead the use tools like Shark or vtune. You can say, show me all the instructions that missed cache and how often they missed. > 2. Can i find if there was a branch misprediction? Likewise. Though, I'm trying to recall if mispredictions where one of the things one could watch for on x86. google around for performance...

Can anyone comment on how they are approaching profiling of jitted code in their llvm backends? For linux and windows, I'm wondering which tools are best integrated with (be it gprof or callgrind on linux, or vtune on either platform). Thanks b.

Hi developers! I would like to know if it is possible to use Vorbis encoder as a real-time encoder for Pocket PCs, because they don't have floating point based unit. If not, do you plan to make a fixed-point based encoder? I'm very interested in this issue so if I could help, I will. I'm working on fixed-point MP3 encoder for XScale devices in cooperation with Intel. It seems that

Hello, I've integrated the tests and AVX pitch code into my fork: https://github.com/rvelea/opus/commits/master I ran test_opus_decode and it seems to be running OK. I'll do some more measurements with VTUNE and the new pitch test in the following days and get back to you with a pull request and the data. In the meantime if you have time to give it a quick look and maybe point out any errors or problems at this stage I'd greatly appreciate it. Thanks, Radu -----Original Message----- From: opus-b...