Questions tagged [high-performance-computing]

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High availability in a generic parallel workload scenario

Let's say I have a compute workload that is so large that it has to be spread between 10 identical server nodes, each with processors, memory, storage and network interfaces, and the workload requires ...
Meatball Princess's user avatar
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What can be the topic of my assignment for presentation about overall computing performance?

I have received the below question for presentation. It was random assignment, its not my field. What is this specifically in Computer Architecture? how CPU and GPU architecture, memory bandwidth/...
AHF's user avatar
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Difficulty understanding how federation increases cache performance for databases?

I am studying system design for distributed systems and in this page (, one of the following advantages was mentioned for federation for databases ...
Henry Zhu's user avatar
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Is there a way to convert FLOPS to bit operation per second

My problem is the following: I have $N$ inner products to compute in parallel every second. Each of the vectors in those inner product is composed of $7$ bits. I want to know for which $N$ it starts ...
Marco Fellous-Asiani's user avatar
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What is the difference between FLOPS and OPS?

I have typically heard computer performance discussed in terms of FLOPS. However, I have recently seen multiple references instead using OPS i.e. operations per second, typically in the context of Big ...
user1887919's user avatar
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Explanation of roofline model

I am currently studying the roofline model. Wikipedia [2] shows the following example graph: The diagonal line shows $\beta * I$. But I do not understand why this line does not go through the zero ...
Johny Dow's user avatar
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How fast we can run 128-bit LCG generator?

Let's consider some 128-bit LCG generator mod $2^{128}$, with some random 128-bit multiplier and increment. How fast we can run it using the same tricks like in AES:
Tom's user avatar
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Is it possible to generate a better random number generator algorithm from an algorithm that use N computers with one that uses N+1 computers?

Is it possible to generate a better random number generator algorithm from an algorithm that use N number of computers with an algorithm that uses N+1 number of computers? I use the word computer here,...
Sayaman's user avatar
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Can a classical supercomputer solve a large Max-Cut Problem?

The Fugaku is the most powerful computer. Its performance is 442,010 TFlop/s. That number does not mean much to a layman like me. I want to know how fast it can solve a hard problem. For example, can ...
Emscripten Fan's user avatar
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Why is it not a good idea to branch a thread outside of a parallel region while other threads are still executing?

Say I have $n$ threads executing in a parallel region and one of them leaves the parallel region when others are still continuing to execute in the parallel region. Why this is a $BAD$ idea? For ...
Turing101's user avatar
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