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How do I choose grid and block dimensions for CUDA kernels?
...answer (I wrote it). One part is easy to quantify, the other is more empirical.
Hardware Constraints:
This is the easy to quantify part. Appendix F of the current CUDA programming guide lists a number of hard limits which limit how many threads per block a kernel launch can have. If you exceed any o...
Apache Spark: map vs mapPartitions?
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Thanks - so does map cause shuffles (or otherwise change the number of partitions)? Does it move data between nodes? I've been using mapPartitions to avoid moving data between nodes, but wasn't sure if flapMap would do so.
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Understanding the Event Loop
I am thinking about it and this is what I came up with:
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What's the difference between a temp table and table variable in SQL Server?
In SQL Server 2005, we can create temp tables one of two ways:
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How to access property of anonymous type in C#?
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Then you'll be able to access it like:
nodes.Any(n => n.Checked);
Because of the way the compiler works, the following then should also work once you have created the list, because the anonymous types have the same structure so they are also the same type. I don't have a compiler to hand to v...
C++ Dynamic Shared Library on Linux
...he virtuals and implement create_object and destroy_object. Your main application would not need to be changed in any way.
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std::vector performance regression when enabling C++11
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I can reproduce your results on my machine with those options you write in your post.
However, if I also enable link time optimization (I also pass the -flto flag to gcc 4.7.2), the results are identical:
(I am compiling you...
Java 8 Streams: multiple filters vs. complex condition
... code that has to be executed for both alternatives is so similar that you can’t predict a result reliably. The underlying object structure might differ but that’s no challenge to the hotspot optimizer. So it depends on other surrounding conditions which will yield to a faster execution, if ther...
ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
To allocate() or to allocateDirect() , that is the question.
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What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
...small as 16 bits on some platforms. It may not be sufficient for your application.
uint32_t is not guaranteed to exist. It's an optional typedef that the implementation must provide iff it has an unsigned integer type of exactly 32-bits. Some have a 9-bit bytes for example, so they don't have a uint...