jit | Go module for executing machine code | Interpreter library
kandi X-RAY | jit Summary
kandi X-RAY | jit Summary
jit is a Go module for executing machine code instructions directly, without having to store instructions in an executable file. It was inspired by this post: Hello, JIT World: The Joy of Simple JITs.
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Top functions reviewed by kandi - BETA
- Main entry point .
- Execute executes code in memory
- usageExit is the usage exit code .
jit Key Features
jit Examples and Code Snippets
Community Discussions
Trending Discussions on jit
QUESTION
I ran into less than ideal inlining behavior of the .NET JIT compiler. The following code is stripped of its context, but it demonstrates the problem:
...ANSWER
Answered 2021-Jun-15 at 19:35The functions Hash_Inline
and Hash_FunctionCall
are not equivalent:
- The first statement in
Hash_Inline
rotates by 1, but inHash_FunctionCall
it rotates bycurIndex
. - For
RotateLeft
you may have probably meant:
QUESTION
Tried to use the JIT feature by adding this class font-[variant]
without any effect.
I know that I can use the @apply
directive and add the normal CSS, but I wanted to be sure that there is no Tailwind way to do it.
Any help is appreciated
...ANSWER
Answered 2021-Jun-13 at 11:47Tailwind way will be to write custom plugin for every font-variant property. This example will add support for font-varaint-ligatures
.
The way you tried font-variant-[variant]
will not work because ligatures, east-easian, etc
are part of a property, not a value
NOTE: unfortunatelly example bellow DOES NOT support JIT feature as a lack of information about support for adding custom JIT utilities (at least for now)
QUESTION
I have created a script to create ad hoc Jitsi meeting rooms in PHP.
The code below almost does what I want:
- Create a random Jitsi meeting ID
- When the user clicks "Copy meeting info" this ID is copied to my clipboard.
- It can then be inserted in any calendar invitation by using Ctrl+V.
However I am not able to figure out how to add a line break to the my info.
The code below results in :
...ANSWER
Answered 2021-Jun-10 at 12:16Good Day,
Please try this. What I changed was:
The single quotes '' to double quotes "",
I made the input element a textArea to be able to see if the \n\r is doing what it is suppose to do, but the main issue I had was because of the quotes. Not sure why you want to add line breaks into an input element.
I tested this code here: playground
You can Copy text from a textArea component too, it does not have to be a input text field.
QUESTION
I need to pass dates into numba function.
Passing them in as .astype('datetime64[D]') works well. But I need to create an epoch date inside function too.
...ANSWER
Answered 2021-Jun-09 at 23:36Your problem is likely related to this documented issue with numba
.
A first workaround would be to define epoch
outside of your jit
function:
QUESTION
Here is my code.
...ANSWER
Answered 2021-Jun-09 at 20:59There are several problems to handle: first, you've commented out the @jit
decorator of your first function, stopF_w
.
If you uncomment it, you'll resolve your current error. Unfortunately, you will immediately run into several other errors. if your numba version is up to date, you'll see an error pertaining to "reflected lists".
Basically, your inputs b_wi
and f_wi
are lists of variable length lists, which cannot be converted into uniform numpy arrays. E.g.: if instead of [[1,2,3,4],[6,7,8,9,10,11]]
, if b_wi
was something like [[1,2,3, 4, 6], [7, 8, 9, 10, 11]]
(easily convertible to an array of shape (2, 5) then it would work without any problems. To get your variable length lists to work with numba, you need to rely on a Typed List, which is a bit cumbersome.
QUESTION
This piece of Code is used to iterate through a node-structure, but what does the arrow-operator do here, and why does it return the next element?
...ANSWER
Answered 2021-Jun-09 at 13:45The PostgreSQL executor produces result tuples (stored in a TupleTableSlot
) "on demand". If you need the next result row from an execution plan node, you call its ExecProcNode
function, which will return the desired result. This will in turn call ExecProcNode
on other, lower plan nodes as needed.
The struct member ExecProcNode
is of type ExecProcNodeMtd
, which is defined as
QUESTION
gone through a variety of the articles, and none seem to "Work". In particular, 2021r1, not getting ANY of the PXTrace statement in the output
Challenge: Static method of the graph directly called from ARPaymentEntry, and 4-5 overloads (From .\App_Data\CodeRepository\PX.Objects\AR\ARDocumentRelease.cs) Eventually ends up calling a single method within that graph, starting with "public static void ReleaseDoc(" No clear place to add a delegate, though that seems the "most correct" method (E.g. question 37262565, comment from cbetabeta) - Yet the initialize event doesn't appear to be firing (possibly JIT optimization? Direct call into static method doesn't really need the class to be instantiated, I'd guess)
Also need a complete solution - e.g. Must handle the call from Payment Entry as well as from AR Document Release process
Sample Code:
...ANSWER
Answered 2021-Jun-02 at 12:54I think its the namespace that is the issue:
QUESTION
I'm building a java CLI utility application that processes some data from a file.
Apart from reading from a file, all the operations are done in-memory. The in-memory processing part is taking a surprisingly long time so I tried profiling it but could not pinpoint any specific function that performed particularly bad.
I was afraid that JIT was not able to optimize the program during a single run, so I benchmarked how the runtime changes between the consecutive executions of the function with all the program logic (including reading the input file) and sure enough, the runtime for the in-memory processing part goes down for several executions and becomes almost 10 times smaller already on the 5th run.
I tried shuffling the input data before every execution, but it doesn't have any visible effect on this. I'm not sure if some caching may be responsible for this improvement or the JIT optimizations done during the program run, but since usually the program is ran once at time, it always shows the worst performance.
Would it be possible to somehow get a good performance during the first run? Is there a generic way to optimize performance for a short-running java applications?
...ANSWER
Answered 2021-Jun-06 at 12:22You probably cannot optimize startup time and performance by changing your application1, 2. And especially for a small application3. And I certainly don't think there are "generic" ways to do it; i.e. optimizations that will work for all cases.
However, there are a couple of JVM features that should improve performance for a short-lived JVM.
Class Data Sharing (CDS) is a feature that allows JIT compiled classes to be cached in the file system (as a CDS archive) and which is then reused by later of runs of your application. This feature has been available since Java 5 (though with limitations in earlier Java releases).
The CDS feature is controlled using the -Xshare
JVM option.
-Xshare:dump
generates a CDS archive during the run-Xshare:off
-Xshare:on
and-Xshare:auto
control whether an existing CDS archive will be used.
The other way to improve startup times for a HotSpot JVM is (was) to use Ahead Of Time (AOT) compilation. Basically, you compile your application to a native code binary using the jaotc
command, and then run the executable it produces rather than the java
command. The jaotc
command is experimental and was introduced in Java 9.
It appears that jaotc
was not included in the Java 16 builds published by Oracle, and is scheduled for removal in Java 17. (See JEP 410: Remove the Experimental AOT and JIT Compiler).
The current recommended way to get AOT compilation for Java is to use the GraalVM AOT Java compiler.
1 - You could convert into a client-server application where the server "up" all of the time. However, that has other problems, and doesn't eliminate the startup time issue for the client ... assuming that is coded in Java.
2 - According to @apangin, there are some other application tweaks that may could make you code more JIT friendly, though it will depend on what you code is currently doing.
3 - It is conceivable that the startup time for a large (long running) monolithic application could be improved by refactoring it so that subsystems of the application can be loaded and initialized only when they are needed. However, it doesn't sound like this would work for your use-case.
QUESTION
A comp sci student I know says that any program compiled with the MSVC compiler is JIT compiled because they are using the visual C runtime and that using the GCC toolchain on windows makes the programs compiled with it run faster because it is fully AOT and has no runtime. Is this true? Having many programs on Windows compiled JIT seems like it would severely reduce performance.
...ANSWER
Answered 2021-Jun-03 at 22:26Despite very similar names C,C++ and C# are not the same languages.
C & C++ are compiled languages and the compiler generatrates the machine level code.
C# is generally compiled and interpreted (or better said JIT compiled) language at the same time. C# code is compiled to the special IL format which JIT compiled to the machine code. As it is JIT compiled you may dynamically runtime create assemblies - so the code may modify itself runtime. (Reflection emit)
So I believe that you have asked about the C#
.
QUESTION
Basic version info first:
...ANSWER
Answered 2021-Jun-02 at 16:39You can tell the index to sort its records already using geom
as 2D by means of using the function ST_Force2D
in the index creation, so that the database doesn't need to do it in query time:
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