ryujit Questions

1

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I created a simple benchmark out of curiosity, but cannot explain the results. As benchmark data, I prepared an array of structs with some random values. The preparation phase is not benchmarked: ...
Actinia asked 3/8, 2018 at 12:57

2

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Sometimes I want to add more typesafety around raw doubles. One idea that comes up a lot would be adding unit information with the types. For example, struct AngleRadians { public readonly double...
Kakaaba asked 12/7, 2017 at 16:47

1

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I've this piece of code: private void AnswerToCe(int currentBlock, int totalBlock = 0) { byte[] bufferToSend; byte[] macDst = mac; byte[] macSrc = ConnectionManager.SInstance.GetMyMAC(); byte[...
Bowse asked 2/8, 2017 at 12:53

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TL;DR: Why is wrapping the System.Numerics.Vectors type expensive, and is there anything I can do about it? Consider the following piece of code: [MethodImpl(MethodImplOptions.NoInlining)] privat...
Demount asked 4/1, 2016 at 21:31

1

While porting a 32bit managed application to 64bit I've observed a strange behavior by a Equals() override within a struct. You find the a repro at github. To reproduce the bug, you should compil...
Arteriotomy asked 18/12, 2016 at 20:38

3

I understand that RyuJIT is a quicker compiler than JIT. But is it the new standard for the .NET 4.6 or is that Roslyn? Or is it that Roslyn is used when you need to expose APIs during the compila...
Wyman asked 12/7, 2016 at 23:51

1

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Does the new RyuJIT compiler ever generate vector (SIMD) CPU instructions, and when? Side note: The System.Numerics namespace contains types that allow explicit use of Vector operations which may ...
Squint asked 20/2, 2016 at 16:0

1

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I'm running some C# code that uses System.Numerics.Vector<T> but as far as I can tell I'm not getting the full benefit of SIMD intrinsics. I'm using Visual Studio Community 2015 with Update 1...
Preparation asked 20/1, 2016 at 10:14

1

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I'm testing what sort of speedup I can get from using SIMD instructions with RyuJIT and I'm seeing some disassembly instructions that I don't expect. I'm basing the code on this blog post from the ...
Archeozoic asked 30/12, 2015 at 13:13

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I have the following C# code trying to benchmark under release mode: using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Text; using System.Th...
Cobalt asked 18/11, 2015 at 7:49

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Are Ngen and RyuJIT two completely unrelated things under .NET 4.6 (especially with different optimization techniques and algorithms)? What produces fastest (better optimized) x64 native code if w...
Cardon asked 11/11, 2015 at 9:22

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After recently upgrading to .net 4.6 we discovered a bug where RyuJit produces incorrect results, we were able to work around the issue for now by adding useLegacyJit enabled="true" to the app.conf...
Gama asked 22/7, 2015 at 17:53

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Reading from Announcing .NET Framework 4.6 it seems to imply that RyuJIT is only for .NET 4.6. Does that means I will need to re-target my applications to .NET 4.6 for RyuJIT to take effect?
Scraggly asked 21/7, 2015 at 3:6

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After installing Visual Studio 2015 RC1, I have loaded a legacy ASP.NET project and changed the .NET version to 4.6. The project works fine, but the website still loads as slow as always. I was exp...
Undershoot asked 4/5, 2015 at 10:39

1

Net 4.6 RC x64 is twice as slow as x86 (release version): Consider this piece of code: class SpectralNorm { public static void Main(String[] args) { int n = 5500; if (args.Length > 0) n = ...
Circlet asked 12/5, 2015 at 15:28

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I've installed the new Jit compiler for .NET RyuJit, and setup the AltJit=* key in .NetFramework in regedit as described in the installation docs. http://blogs.msdn.com/b/dotnet/archive/2013/09/30/...
Deathless asked 15/3, 2014 at 9:34

1

Today I have read an article about the new .Net Native on MSDN. "Windows Store apps start up to 60% faster with .NET Native and have a much smaller memory footprint. Our first release is...
Borborygmus asked 4/4, 2014 at 16:19
1

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