04-13-2008 04:06 PM
04-14-2008 01:15 PM
Hi Mark-Ren,
You should be able to use more than 4 cores with LabVIEW. I'm not sure by what you mean with the VI core crash. Can you explain this a bit more? I'm including a few great articles about multicore that explains programming with multicore, speed with multicore and pipelining for multicore. Multicore speed will highly depend on the architecture of the application. I hope this helps!
Carla
04-14-2008 02:01 PM
Carla,
Thanks for your email.
May you email me a Labview VI code that runs on cores more than 4 cores ?
I will like to test it to make sure whether or not Labview supports for a computer with cores more than 4.
Again, I repeat my problems with Labview 8.5 version: 1) For more tha 2 cores (CPUs), the Labview
code does not increase the speed and only runs the same fast as two cores (that is, Labview cannot take advantage
for a computer with more than two cores); 2) If you assign your code to 7 individual cores on a 8-core computer (such as
my Dell Precision T7400 computer that has 8 cores), the Labview code will crash.
I am waiting for you to email me your code that suppot more than 4 cores.
Thanks.
Mark-Ren.
-----------------------------
Hi Mark-Ren,
You should be able to use more than 4 cores with LabVIEW. I'm not sure by what you mean with the VI core crash. Can you explain this a bit more? I'm including a few great articles about multicore that explains programming with multicore, speed with multicore and pipelining for multicore. Multicore speed will highly depend on the architecture of the application. I hope this helps!
Carla
04-15-2008 10:30 AM
Carla,
I have attached my Lavbiew code, in which I have used 7 cores.
May you please run this code on a computer that has 8 codes. This code will crash each time.
If you run this problem on a two-core computer, it will be OK since the rest part assigned to other cores do
nothing. So, please do run it on a 8-core computer.
Please let me know you result.
Also, the execution speed of this code will not increase after you use more than two cores.
I beleive you know how to test this code. Let me know what is the problem.
finally I have read all the documents including list on you previous, before I contacted NI.
I noted that all the available examples are based on two cores system and I have not sees any NI example
that uses 3 cores (Please email me if you/NI do have!).
Thanks and I am waiting to the answers.
Mark-Ren.
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04-15-2008 01:47 PM
Hi Mark-Ren,
I have a few follow-up questions for you. Which OS are you using? Are you running on Windows or RT? Can you post a screenshot of the error that you get or at least re-iterate what the error says? Hopefully, with this information, we will be able to figure out what is going on. Unfortunately, I don't have an 8 core computer to try it on myself so the more information that you can provide us with, the easier it will be to narrow down the problem. Thanks for the help!
Carla
04-15-2008 02:13 PM - edited 04-15-2008 02:15 PM
04-15-2008 03:30 PM
Carla,
Thank again for your rapid reply.
My operation system is Windons Professional. Then my VI code crash: the Labiew VI ends running suddenly and closed the Labview system. After this, if I need to run my VI code again, I need to re-start Labview system first and then re-load my VI-code. Sometime the Labview ask me to recove my VI code. This is all information regarding the crashing. To verify this, You definitely need a 8-core computer to run my VI code. I will be disappointed if NI have never tested this (or NI's others codes) on a 8-core computer since such computers are very common these days and you can get one from Bestbuy or somewhere.
Thanks again, please inform me your results if you can test my VI code on a 8-core computer.
Deqing.
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04-15-2008 03:31 PM
Carla,
Thank again for your rapid reply.
My operation system is Windons Professional. When my VI code crash: the Labiew VI ends running suddenly and closed the Labview system. After this, if I need to run my VI code again, I need to re-start Labview system first and then re-load my VI-code. Sometime the Labview ask me to recove my VI code. This is all information regarding the crashing. To verify this, You definitely need a 8-core computer to run my VI code. I will be disappointed if NI have never tested this (or NI's others codes) on a 8-core computer since such computers are very common these days and you can get one from Bestbuy or somewhere.
Thanks again, please inform me your results if you can test my VI code on a 8-core computer.
Deqing.
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04-15-2008 03:58 PM
04-15-2008 04:01 PM