Displaying 20 results from an estimated 292 matches for "outperforms".
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2005 Nov 22
0
question about VM outperforms physical machine on a micro benchmark
Dear all,
I ran a small program to test the popen() function call performance on both a VM and a physical
machine. The program just does a loop of popen() for 20 times and records the total execution time.
The host of the VM has the same hardware configurations as the physical machine. The VM and the
physical machine both have 2.6.11 kernel. The 20 popen() loops run for 0.453s on VM 0.690s on
2008 Jan 07
2
[LLVMdev] GC infrastructure checked in
...ovide
reference implementations of these facilities.
That said, the PyPy group has llvmgcroot support on a branch; you
could ask Armin Rigo <arigo at tunes dot org> for details about
accessing it.
On his benchmarks, Armin saw an 8% speedup vs. a shadow stack. Their
gcc backend still outperforms the LLVM backend, though—and llvm-gcc
outperforms that further still. So perhaps those llvm-gcc GC
extensions could be put to good use after all! :)
— Gordon
2012 Jul 27
4
[LLVMdev] ACE claims better result than LLVM for ARM 9 ?
ACE issued following PR:
http://www.ace.nl/news/aces-cosy-compiler-framework-outperforms-llvm-arm9-processor
Weird that they don't give any number and use ARM 9, do they mean cortex-a9 ?
2017 Apr 25
3
RFC: Improving performance of HashString
On Tue, Apr 25, 2017 at 12:55 PM, Vedant Kumar via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
>> On Apr 24, 2017, at 5:37 PM, Scott Smith via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>>
>> I've been working on improving the startup performance of lldb, and ran into an issue with llvm::HashString. It works a character at a time, which creates a long
2004 Apr 29
1
openMosix vs SNOW: redhat kernel causing slowdown?
...there,
We're currently attempting to explain a slowdown of an LVQ-type parallel
analysis we're working on. We are benchmarking our analysis running
over openMosix against the same running via SNOW for R. Both perform
similarly on small datasets, but on large datasets SNOW drastically
outperforms openMosix. However, these results are achieve running SNOW
on the default RedHat kernel (Enterprise Edition, RHEL-3) and mosix on
the same kernel patched with the rpm for RedHat 9 from sourceforge.
Even though the rpm seems to be compatible and everything runs fine,
when the same SNOW analysi...
2004 Jul 07
9
Windows 2K outperform Linux/Samba very much?
Hi, all:
I want to check small files' property(such as date, path, and so on)
frequently. The files are stored in netwrok driver and their sizes
vary from 2KB to 5KB.
I found that Windows 2K outperform Linux/Samba very much after I
campared the bench results. I am very confused about it and who can
explain it?
The computers' configurations are as follows:
1. PC Client
It
2008 Jan 07
0
[LLVMdev] GC infrastructure checked in
...of these facilities.
>
> That said, the PyPy group has llvmgcroot support on a branch; you
> could ask Armin Rigo <arigo at tunes dot org> for details about
> accessing it.
>
> On his benchmarks, Armin saw an 8% speedup vs. a shadow stack. Their
> gcc backend still outperforms the LLVM backend, though—and llvm-gcc
> outperforms that further still.
The second part of this is not correct. I don't think we ever even tried
llvm-gcc on the output of our C backend. What we see on x86 machines is
that LLVM's own code generators produce slower code than using LLV...
2014 Aug 10
2
[PATCH] New apodization functions
Hi all,
This patch adds two new apodization functions that I developed.
From my own test results (on quite a diverse dataset) they
outperform the current best apodizations by 0.05% - 0.1%
(depending on the specifics) on compression.
Here's a selection of the test results
*Apodization functions* ,Compres, Speed
partial_tukey(2) tukey(0.5) , 56.50 , 37.2x
partial_tukey(3)
2011 Aug 04
2
[LLVMdev] Performance benchmarks available?
I listened to the Oracle webcast about their new upcoming development
tools. They mentioned that their C/C++ compiler "far outperforms all
open source alternatives".
I asked the question if they have any benchmark URL supporting this
statement.
They actually answered. They said that they stopped publishing benchmark
results. But they said that on Intel platform their compiler outperforms
gcc by 43% for integers and 3X fo...
2015 Jun 10
7
curve25519
...ibrary for
curve25519/ed25519 and I have placed it in the public domain. It support DH
key exchange as well as ed25519 keygen, sign and verify. The implementation
is constant-time, supports blinding, bulk-verify and more.
The library is available as portable-C as well as ASM for Intel-x64 CPUs.
It outperforms curve25519-donna by a factor of 3.6 to 11 depending on the
target.
You may have a look at the source code hosted at:
https://github.com/msotoodeh/curve25519.
I was wondering if OpenSSH is a suitable home for this library?
Thanks, Mehdi.
2020 Mar 27
2
Efficient Green Thread Context-Switching
Hi LLVM devs,
I’d like to describe my problem, and then propose new features of LLVM which would solve it efficiently.
I'm building a new statically-compiled programming language, and I plan on using LLVM as the backend. The language will have a runtime with cooperatively managed green threads (user-space "mini-threads", each with their own dynamically allocated stack). A single OS
2006 Jun 20
3
SuperMicro X7DBE with CentOS4?
I am planning to build a server based on the SuperMicro X7DBE+-O
motherboard. This server will have two dual-core Xeon processors and
a 3ware 9550SX raid card.
Has anyone built a server based on this motherboard? Are there any
issues with the smp/dual-core support in CentOS4 that might cause
problems?
I appreciate any input. I'm just looking to find out about any
possible problems before
2011 Jun 08
1
Drupal/MySQL performance in Xen and OpenVZ
Hi,
We are considering a transition from OpenVZ to Xen for our web server
infrastructure. The primary task performed by the virtual servers is to run
a number of Drupal sites with a MySQL backend. The webserver and MySQL
servers are on separate virtual hosts. We also have a number of smaller
hosts running on the same hardware (a couple of dev-servers, a
logging-and-monitoring server, a secondary
2013 May 29
2
Performance checks
On 28-05-13 20:09, Janne Hyv?rinen wrote:
> On Windows the 32-bit NASM enabled compiles are always fastest. If you
> can run 32-bit code on your Linux box you should compile with assembly
> optimizations.
That depends on the way you define speed. For decoding this doesn't seem
to be true. I reran my tests, it took a little longer because I couldn't
believe the results I got.
2017 May 17
3
Best practices for copying lots of files machine-to-machine
Vanhorn, Mike wrote:
> On 5/17/17, 12:03 PM, "CentOS on behalf of ken" <centos-bounces at centos.org
> on behalf of gebser at mousecar.com> wrote:
>
>>An entire filesystem (~180g) needs to be copied from one local linux
>>machine to another. Since both systems are on the same local subnet,
>>there's no need for encryption.
>>
>>I've
2009 Jan 30
5
[LLVMdev] Performance vs other VMs
...Mono was up to 12x slower than LLVM before and is now only 2.2x slower on
average. Interestingly, the JVM scores slightly higher than LLVM on this
benchmark on average and beats LLVM on two of the five individual tests.
The individual scores are particularly enlightening. Specifically:
. LLVM outperforms all other VMs by a significant margin on FFT, Monte Carlo
and sparse matrix multiply.
. LLVM is beaten by the JVM on successive over-relaxation (SOR) and LU
decomposition.
In the context of the SOR test, I suspect the JVM is using alias information
to perform optimizations that LLVM and llvm-g...
2004 Jun 15
2
S/R/RWeb/ODBC
I'm looking for an optimal approach to access Oracle databases via RWeb
applications. I'm new to R but familiar with programming functions and web
pages for the S+ Statserver. I'm now going through the motions of migrating
S+/Statserver applications to R/RWeb as a feasability exercise. I can access
databases using ODBC directly in R or S, and using Statserver, but I have
not succeeded
2012 Jul 27
0
[LLVMdev] ACE claims better result than LLVM for ARM 9 ?
On Jul 27, 2012, at 9:36 AM, Sebastien DELDON-GNB wrote:
> ACE issued following PR:
> http://www.ace.nl/news/aces-cosy-compiler-framework-outperforms-llvm-arm9-processor
> Weird that they don't give any number and use ARM 9, do they mean cortex-a9 ?
It's impossible to say. This sort of marketing statement is impossible to refute, because there are no details. Who knows whether they compared against LLVM fairly with it tuning for th...
2012 Apr 13
3
remove src/libFLAC/ia32 permanently?
Hi:
In my opinion, we should axe all pure asm implementations in
src/libFLAC/ia32 and the relevant configure options.
Reasons are simple:
- modern compilers plus the use of intrisincs make the code as faster
as possible, if you need maximum speed I suggest you to build with
profiling enabled. ;)
- there is no support for x86_64 (that is.. all modern PC ;-) ) or for
arm (most modern
2014 Sep 20
0
[PATCH] New apodization functions
Martijn van Beurden wrote:
Hi Marijn,
Sorry for the lack of response on this. I didn't understand it
when it came in and I needed time to properly review it. Sunday
morning after a really good night's sleep seems like a good time
for that :-).
I've currently got this patch in an un-published branch.
> This patch adds two new apodization functions that I developed.
> From my