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Hermetian
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Vista, CA, USA
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Hermetian
reacted to
Cogman's post
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CPUs for shared memory parallel computing
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Yes and no. You can't make a byte[] that stores more than 2^31 bytes (2GB) because of integer indexing. You can, however, store...
7 minutes ago
Hermetian
replied to the thread
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CPUs for shared memory parallel computing
.
Here's the results of timing tests over a large range of problem sizes. Note how poorly my current parallelization approach is for...
Yesterday at 8:08 PM
Hermetian
replied to the thread
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CPUs for shared memory parallel computing
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In that example, yes - although 20M bases. Yes. Now if these are required to be the same length as the query string (e g. 22...
Yesterday at 7:59 PM
Hermetian
reacted to
Ken g6's post
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CPUs for shared memory parallel computing
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If I understand the application correctly, you're searching the 200m-ish bases of chromosome 4 for partial matches to a 22-character...
Yesterday at 7:49 PM
Hermetian
replied to the thread
Question
CPUs for shared memory parallel computing
.
In this application I am using regex to generate thousands of candidate matches which are then assayed by mathematical criteria. When...
Yesterday at 4:06 PM
Hermetian
replied to the thread
Question
CPUs for shared memory parallel computing
.
I agree. The point in monitoring it is two-fold: checking that usage is scaling linearly with number of parallel processes, and...
Yesterday at 3:29 PM
Hermetian
replied to the thread
Question
CPUs for shared memory parallel computing
.
Mathematics is the language of measurement. College calculus is a small part of its realm. The algorithm I've implemented here is...
Yesterday at 3:14 PM
Hermetian
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StefanR5R's post
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While "% CPU load" shows whether threads are busy or are sleeping (e.g. waiting for disk I/O; waiting on semaphores for inter-thread...
Yesterday at 1:55 PM
Hermetian
reacted to
LightningZ71's post
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CPUs for shared memory parallel computing
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From your earlier post, it appears that your parallelism tends to hit a wall around 8 processes as scaling really falls off. I don't...
Yesterday at 10:32 AM
Hermetian
replied to the thread
Question
CPUs for shared memory parallel computing
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@Ken g6 I have an extended Mathematica license permitting up to 12 parallel kernels. The next step up is out of my budget. Thus a 12...
Monday at 4:31 PM
Hermetian
replied to the thread
Question
CPUs for shared memory parallel computing
.
Lucas Films is one of them.
Monday at 3:44 PM
Hermetian
replied to the thread
Question
CPUs for shared memory parallel computing
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For latest code release and a little documentation, see Fifth Update at https://community.wolfram.com/groups/-/m/t/3265520
Monday at 4:10 AM
Hermetian
reacted to
Ken g6's post
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If you invert the plot of elapsed time, to runs per hour or the like, and make the x-axis logarithmic, you might get both better...
Monday at 2:50 AM
Hermetian
replied to the thread
Question
CPUs for shared memory parallel computing
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@StefanR5R Thank you for the ideas and specs. 🙂 The combinatorics of this computation are: (# of targets)x(# of queries)x(# of regex...
Sunday at 2:06 PM
Hermetian
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StefanR5R's post
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@Hermetian, if you are willing to remove and later reseat DIMMs without assistance of your system builder, you could run scaling tests...
Sunday at 12:21 PM
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