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How to use Scalapack as a benchmark?

For a science fair project I am comparing the performance of MPI and PVM on GPU clusters. The biggest problem I have is finding benchmarking software for PVM. Linpack is the most used benchmarking software, and from there I have gone on to find Scalapack, a set of libraries which has the same type of functions as Linpack, but supports both PVM and MPI. From my understanding, Linpack, Specifically HPL , Is a set of functions along with a program which utilizes them for benchmarking. Scalapack, on the other hand, appears to be only the funtions, with no program. Does anyone know how to use Scalapack as a cluster benchmark that measures performance, in flops if possible?

Question by danielemur  


Linpack Benchmarking on PVM with CUDA?

I'm working on a project comparing the performance of PVM and MPI in GPU accelerated clusters. Naturally, I turned to the defacto standard for computer cluster benchmarking, LINPACK. The problem I'm running into is finding a version of LINPACK for PVM. It does exist somewhere because there are performance comparisons  of systems using LINPACK and PVM. Ive already installed SCALAPACK and all of the other libraries required for it to work, but I can't figure out how to use it as a benchmark. Additionally, I need the benchmark to be GPU accelerated. Ive looked into HPL, which is GPU accelerated through CUDA, but there are no versions for PVM. Does anyone know of a version of LINPACK that can be run on PVM and could be modified to be CUDA accelerated?

Question by danielemur    |  last reply


Is there a benchmark file in povray 3.5? and if so, How do you use it?

I have been searching for a way to benchmark my openmosix cluster and i came across povray and povmosix. povmosix is a program that splits a scene into parts to be processed and rendered by separate computers. Unfortunately it only supports 3.5. i know how to use the benchmark in 3.6 but not 3.5. any help would be apreciated.

Question by danielemur  


What is a distibution of linux for a beowulf cluster that can be used with a cpu benchmark?

I have had lots of questions here recently about similar topics but hopefully this will be my last. I am good with computers but am not comfortable with complex programming. I need a distribution of Linux that is used for computer clusters that can have the processing power benchmarked. Is there a distribution of Linux for beowulf clusters where i would only have to install the os, connect the computers with a router and not have to use complex programming? if so, is there one where the total processing power of the cluster can be benchmarked? If so, what benchmarking software would I use? I will not need to actually run any programs on the cluster. I just need to be able to benchmark the processing power.

Question by danielemur    |  last reply


Switch graphics on Dell XPS 15?

I'm wondering if it is possible to manually switch the graphics on a dell XPS 15 laptop.  It automatically switches on intensive tasks (like games), so performance is fine, but all of the benchmarking tools recognize the graphics card as "Intel HD (integrated) Graphics" instead of the NVIDIA 420M.  Is there a way that I can manually change the graphics for benchmarking purposes?  Thanks.

Question by budabob07    |  last reply



Browser news and updates

Firefox 3.0 RC 1 takes the lead on speed. The Mozilla dev team claims to have squeezed more performance out of Firefox 3.0. The betas were fast, so has the team been able to get more out of their code?Over the past few months I have benchmarked several incarnations of Firefox 3.0 beta. My last benchmark of Firefox 3.0 (using the SunSpider JavaScript benchmark), which looked at Beta 5, showed the browser to be the fastest of the pack, comfortably beating all the competition.UPDATE: I just upgraded: there is no "back page" button, and most of my extension are GONE: chatzilla had an updated version however.SECOND UPDATE: the first update problem was MY fault :-)FireFox 3.0 RC 1 news blog.The Beta is available here !

Topic by Goodhart    |  last reply


How could i measure the time in linux from when i start a process and the process ends in a program?

I am running a program called povmosix which uses povray and i need to be able to measure the time as acurately as possible from when i start a process to when the process finishes. I Know how to use the time command in terminal but this doesn't use terminal because it is a program. any help would be appreciated.

Question by danielemur    |  last reply


Visual Basic Code...?

Hi all. I am making a CPU benchmark program in Visual basic Express 2010. I have everything I need except the actual STRESS TEST. :D Heres a BASIC look at what i'm thinking i'm going to need. Private Function StressTest() As Integer     'Complex math that will STRESS the CPU a lot     math.math.math............................     math math math.................     'Complex math that will STRESS the CPU a lot     return time-taken-to-run-test-in-mili-seconds End Function Please help me make this! I am SOOOOOO Close! All I need is to know how long the thing took, and the actual math that puts STRESS on the CPU!!! PLEASE HELP ME OUT!!! IT WOULD MAKE A 12 YEAR OLD'S DREAMS COME TRUE!!! THANKS!     

Question by sci4me    |  last reply


What is my bottleneck? Answered

I just recently built a new gaming machine, and have been running into a bottleneck issue. I was wondering if anyone could give me some advice.  My Specs: Windows 7 Ultimate MSI GD-55 Z-77a Motherboard Intel i5 3570k OC 4.2 Ghz Radeon HD 5770 x2 (Crossfire) 16Gb (4x4) Corsaire 1600Mhz RAM 1 Tb 7200rpm Western Digital HDD 850w Coolermaster PSU I have downloaded the most recent AMD drivers and Crosssfire Profiles. The problem I am having, is that I almost never see anything in my computer running at max while gaming. I will usually have my GPUs running at around 60-70%, and none of my CPU cores running higher than 50-60%.  The first thing that came to my mind was temperature. However my CPU never gets hotter than 65c, and my GPUs never hotter than 80c.  The other thing that I thought of was a possible lack of power. But 850w is at least 40% more than recommended for my system specs. To test this, I did a CPU benchmark, and a GPU benchmark at the same time, both hit 100% usage, and my computer did not lose power. (nor did anything get too hot) After ruling Temperature and power out, I thought maybe it was my RAM. However, I have read multiple places that it is nearly impossible for any game to max out quad channel memory bandwidth. I have more than enough of better-than-average RAM, storage isn't the issue. So I doubt its my RAM. But I am no expert. I then ran "Windows Resource monitor" to watch my HDD Disk usage. While gaming, nothing transferred more than a couple Mb/S. The specific specs of my HDD include a 64MB Cache, and a  6.0Gb/s Data transfer rate. My Motherboard also supports 6Gb/s Transfer rates. So I doubt its my HDD. I know my GPUs are 2 generations old, but if they were the bottleneck they would be running at 100% (or at least higher than 80%) Now I don't know what to think, except that its maybe software related. But I cannot think of anything specific that would do this sort of thing. Any suggestions?  

Question by schwerlin    |  last reply


ATi (AMD) GPU Problem Answered

I recently recieved an XFX Radeon HD 6850 card after reluctantly switching from nVidia. My previous card was an MSI N8400GS 512MB DDR2, and wasn't up to spec with the latest games. I installed teh card using standard procedures (grounding myself, carefully removing and inserting cards etc. I have determined it isn't a problem with my setup or power supply, as my system specs exceed all of those required by the card. The only one it didn't meet was PCI-E x16 2.1, mine is on;y 2.0, but I'm told it is backwards compatible, and it wasn't listed as a requirement (only pci-e x16). I have installed the drivers from the ATi website, and uninstalled my old ones. The crd does not run hot at any time, so overheating isn't a problem. The problem is I sometimes heat interference on the headphones, even though I'm using a separate sound card. I also get digital interference on the screen (I'm using DVI). When I try to put any kind of stress on the card (run-in tests, benchmarking, or gaming), the display driver stops responding multiple times, the interference increases, and sometimes the system halts and I have to reset. I can't think of any good reason for this problem other than a faulty card, but I bought it brand new @ factory sealed, with no modifications or over clocking. Any idea what the problem might be?

Question by andy70707    |  last reply


Technology Category: Artificial Intelligence/ Machine Learning/ Data Science

I would like to see AI/ Machine Learning/ Data Science be a Subcategory in the Technology Category on Instructables. The field of Data Science/ Machine Learning is on the rise. Machine Learning is being integrated into various products & services we use on a daily basis. Below is the Developer Roles chart from the Stack Overflow Developer Survey 2017; It shows that the field of Data Science & Machine Learning combined accounts for approximately 12% of those surveyed, compared to the combined 1.6% in 2016. A large number of Open Source Machine Learning libraries like TensorFlow, SciKit, etc have been made available to developers across the world. These libraries enable developers & engineers to integrate ML models, Computer Vision, Chat Bots, Speech & Text recognition, etc into their projects. The Google Assistant & Amazon Alexa AI both AI Assistants are now compatible with the Raspberry Pi. Android Things - An OS built for connected embedded systems which can run ML & AI programs is now compatible with Hardware Platforms like the Intel Edison/ Joule & the Raspberry Pi. Platforms such as OpenAI conduct fundamental research & provide free software for training, benchmarking & testing AI. Kaggle - a website for hosting Data Science Competitions has a large collection of high-quality public datasets. There are many other platforms & frameworks like these. With the growing number of resources being made available in these fields, it is only natural that a large number of people will be looking for tutorials & instructions to help them integrate these resources into their projects. Instructables could become the repository of ML/AI based projects. E.g: AI-based Security System, a Line following robot which uses ML algorithms to follow the line, etc. I hope we can have a constructive discussion in the comments as to how we the Instructables Community can make Instructables the best repository for AI/ML projects.

Topic by Jonathanrjpereira    |  last reply


RetroPie system hanging problems

Not too long ago I ordered a Raspberry Pi 3 and used it as my main computer for about a day and while it did most things pretty well, internet browsing, as usual, was painful, with the browser tabs loading very slowly and crashing frequently, probably due to the small about of RAM and poor RAM management. Anyways I decided that while the Pi 3 may still not be suitable for me in desktop use, what about game emulation!?!? ----------- So I download the RetroPie distro and flash that to a quality SD card, and get it set up. I installed a few experimental emulators and messed with the CPU/GPU RAM allocation a bit but any time I try to emulate a system, or even exit an emulator and get back to the emulation station, the entire system hangs!!!! Being a hardware guy, I get the osciloscope and measure the power supply. I did notice that when the PS3 is connected via USB, the red light on the Pi goes out. Surely enough the red light goes out because the nominal 5V input drops to below 4.5V, which causes the 1.1V regulator powering the processor to drop out for some reason. I replaced the dodgy 6 ft USB cable and 5V 2A power adapter with a much shorter 2 foot long and thick micro USB cable and use a quality samsung 5.3V 2.5A charger, and this seemed to fix that problem and reduce the frequency of system hangs. Now I can no longer observe a correlation between a system hang and low voltage dropout. The minimum voltage observed was 4.8V. However I still sometimes get system hangs when exiting emulators, and it is just about guaranteed to hang when trying to use the SNES, N64, and PSP emulators. I might try to reflash RetroPie over this weekend if I have time, but I want to know if anyone else had this problem or might have a solution. The SD card used was a 32GB SONY UHS1 card nominally rated at 40MB/s transfer rate, and benchmarked the highest of all my 32GB cards with 4Kbyte random read/write. I used Win32DiskImager to flash the card in windows 10.

Question by -max-    |  last reply


New computer freezing problem

So I just built myself a new computer with the following specs gigabyte motherboard model: GA-MA770T-UD3P (rev. 1.0) phenom 2 tri core processor 4gb ddr3 mushkin ram radeon 4670 tp link wireless card 2 LCD's hooked up to the 4670 Windows 7 64-bit/ XP 64-bit (not at the same time) +tons of cooling so nothing is over heating I installed windows 7 and it kept freezing up every once in a while and I tried just about everything to fix it. Updating bios, cleaning the registry, making sure all the drivers are up to date, all sorts of things. So I thought it was Windows 7 giving me the problem. I uninstall windows 7 and installed windows xp. I loaded up everything got the drivers up to date and after a couple of hours it froze up. Then I rebooted and bam another freeze 3 minutes into being on the computer. And again the next time 15 minutes into being on the computer. Now Im not sure if the freezing is happening on windows 7 for the same reason as on Windows xp and it is driving me crazy not being able to use my new computer Any ideas on what I can do to fix the problem? Thanks for any help. Got some more details. 1) I noticed when I move a window around I my cp usage spikes from 1% to close to 30%. Not sure if this is normal but with tri core 2.8ghz doesnt seem like this is good. 2) When I have 3+ windows open and I drag them over each other it leaves a trail or shadow of its edge so it looks like I am dragging many windows. Sometimes this shadow is just white. 3) Also when I try to install a game the computer will always freeze before it finishes and most of the time right at the beginning. 4) When I press the button to force it to go off and then turn it back on it often just comes up with a black screen and I have to repeat. it always turns on the second time. How can I tell if it is my hardware? Just did a video stress test and benchmark. Everything was normal. Ran "cpu stability test 6.0". Watched it for 20 minutes then I left the computer and came back to see it frozen in screen saver. Speedfan temps- Temp 1- 26c temp2- 25c HD0- 26C core- 15c It is pretty cold in my room. I also found something that makes it freeze every single time I have done it so far. When trying to install world of warcraft as soon as I click agree in the install setup it freezes. 6 out of 6 times. My power supply is 500w "stable power"

Topic by Tanners    |  last reply


Create awareness of a particular diet choice...

What would make the world a better place...depends how you define world, and your benchmark for what distinguishes better place.  This contest suggests things that would improve home, neighborhood, society, and planet.  I have an idea that would improve all of the above! Health: Personal back story:  Growing up I drank a lot of pop.  It was not uncommon to polish of a 12 pack of soda in a day or two, and this would happen regularly.  For the last fifteen years I've consumed at least 2-4 liters of cola per week, if you average it out (probably closer to ten).  Thats a conservative 2000 litres of cola.  At ~120 grams of sugar per Liter, that works out to a whopping 240 KILOGRAMS of sugar.  Now, were my parents terrible?  I don't think so - the knowledge wasnt out there that us kids were being fed a high sugar highly addictive substance that really messed with our bodies.   I can personally account that I had a terrible sleep schedule growing up, and I can directly attribute it to sugar/caffeine.  Unlike many friends I know I managed to stay skinny and somewhat 'in shape' through hyperactivity.  The artificial insomnia destroyed my school scores - as I spent a lot of time very tired in class, not paying attention - and was even suggested to go on medications to 'fix' how 'weird' I acted.  Most all of my child teeth and adult teeth are full of fillings where I had cavities - and I can't have cold food touch my teeth because I have almost no enamel left.  Consider now the direct economic cost of this:  At an average of a dollar per liter - multiply by the number of 'addicted' heavy user kids out there, and you have yourself a staggering amount.  I'm not alone.  I know lots of friends with similar stories - some less fortunate with serious health problems like diabetes and bariatric problems.  Economy: The high fructose corn syrup industry has halfway destroyed the cane sugar market in many third world countries.  Soda machines all over, often in schools, rape the pocketbooks of young persons for a product they don't need.  Pretend for a moment you are a drug dealer gang boss.  Now imagine you can put a legal salesman in most every school, "free".  I don't need to explain the rest of the story. Society:  Soft drinks are not 'evil' - they are an enjoyable vice that when taken in reasonable quantity aren't that harmful.  Therein lies the problem - they are marketed as the be-all and end-all to be happy, thirst quenched, and popular.  Couple this with the fact that they contain high levels of two of the most addictive legal substances out there:  Caffeine and glucose.  Our nervous systems don't stand a chance. Environment:  Frankly you'd be surprised how much carbon dioxide comes from the soda industry - that fizz goes somewhere after you *kssshk* open the can.  High fructose corn syrup is bad not just for your body but for the environment.  Some areas are very good at recycling, but still others are brutally abysmal at their three R's.  Many COUNTRIES in fact don't recycle at all.  That's a LOT of plastic and aluminum ending up in the environment, to be there long after we are gone. My proposal:  What I want to see is awareness campaigns of the health risks of being a heavy user - in conjunction with warning labels similar to what the tobacco industry has on their products.  I want to see their huge profits going into the community (like in this contest - more of it!).  Make companies accountable for their products. photo courtesy freefoto.com

Topic by frollard    |  last reply