Displaying 20 results from an estimated 54 matches for "autotun".
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autorun
2017 Nov 28
2
Publication LLVM Related Publications Submission
...e LLVM to the
Related Publications section.
Both papers focus on code isolation
applied to perform piecewise compiler optimizations.
The code isolation
process is performed by CERE, an open source tool based on LLVM.
The
second paper is an extended version of the first one.
1) Piecewise
Holistic Autotuning of Compiler and Runtime Parameters
@inproceedings{popov2016piecewise,
title={Piecewise Holistic
Autotuning of Compiler and Runtime Parameters},
author={Popov, Mihail
and Akel, Chadi and Jalby, William and de Oliveira Castro, Pablo},
booktitle={European Conference on Parallel Processing},
p...
2018 Jan 30
0
Publication LLVM Related Publications Submission
...>
> Both papers focus on code isolation applied to perform piecewise
> compiler optimizations.
> The code isolation process is performed by CERE, an open source tool
> based on LLVM.
>
> The second paper is an extended version of the first one.
>
> 1) Piecewise Holistic Autotuning of Compiler and Runtime Parameters
>
>
> @inproceedings{popov2016piecewise,
> title={Piecewise Holistic Autotuning of Compiler and Runtime
> Parameters},
> author={Popov, Mihail and Akel, Chadi and Jalby, William and de
> Oliveira Castro, Pablo},
> booktitle={Euro...
2020 Mar 16
2
GSoC Project - Advanced Heuristics and ML
...ng list
saying that I was looking forward to working on these GSoC projects:
*Advanced Heuristics for Ordering Compiler Optimization Passes*
and
*Machine learning and compiler optimizations: using inter-procedural
analysis to select optimization*
I currently do an undergraduate research on compiler autotuning of Rust
code, more specifically, autotuning of optimization passes of the LLVM IR.
I would very much like to work on these projects, but I don't know where to
start. What should be my next steps?
GSoC applications will open soon, so I am a little nervous...
--
Emanuel Lima
-------------- n...
2020 Mar 09
2
GSoC - Improve parallelism-aware analyses and optimizations
...s per your suggestion, I read the description of these two projects:
Advanced Heuristics for Ordering Compiler Optimization Passes
Machine learning and compiler optimizations: using inter-procedural
analysis to select optimizations
and they are amazing! Indeed, they are very close to my interest in
autotuning. I didn't see them on the list before.
If I choose to focus on these projects, where should I start?
Em seg., 9 de mar. de 2020 às 19:00, Johannes Doerfert <
johannesdoerfert at gmail.com> escreveu:
> Hi Emanuel,
>
> you took the first step already, you emailed the list :)...
2013 Jul 07
1
status of autotuning freebsd for 9.2
Andre,
Are you going to have time to MFC things from -current for auto-tuning
-stable before 9.2?
I fear (maybe unnecessarily?) that we are about to ship yet another
release that can't do basic 10gigE when sufficient memory exists.
If you don't have time, then let me know and I'll see what I can do.
--
Alfred Perlstein
VP Software Engineering, iXsystems
2020 Mar 09
4
GSoC - Improve parallelism-aware analyses and optimizations
Hello! My name is Emanuel and I am an undergraduate student from Brazil (at
the University of São Paulo) wanting to participate in this years GSoC on
LLVM. Specifically, on the "Improve parallelism-aware analyses and
optimizations" project.
I currently do research on autotuning of LLVM IR optimization passes and I
am sitting for a class about parallel computing, but I have been studying
the subject by my own for some weeks. I think I have an intermediate level
of C++, but that is kind of difficult to measure. It would be my first
contribution to open source, so I don...
2014 Oct 02
2
[LLVMdev] Autotuning parameters/heuristics within LLVM
Hi,
I am planning to begin a project to explore the space of tuning LLVM
internals in an effort to increase performance. I am wondering if
anyone can point to me any parameterizations, heuristics, or
priorities functions within LLVM that can be tuned/adjusted. So far,
I'm considering BranchProbabilityInfo and InlineCost. Does anyone have
any other suggestions?
Thanks,
Robert
2017 Oct 15
2
IR Pass Ordering Sensitivity
..., Oct 14, 2017 at 10:58:17PM -0500, Kavon Farvardin via llvm-dev wrote:
> > something simpler will do, IMHO. Happy to discuss this further if
> > folks are in California next week :)
>
> Yes, I'll be in California next week, let's chat!
>
> We could make use of the autotuner I'm currently building:
>
> https://github.com/kavon/autotune
>
> It tries to find an optimal sequence of IR passes, and I've run into a bunch of different bugs with it so far (e.g., it seems structurizecfg interacts poorly with 'invoke'). I'll start submitting b...
2017 Oct 14
2
IR Pass Ordering Sensitivity
On Sat, Oct 14, 2017 at 11:05 AM, John Regehr via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> These are definitely LLVM bugs. It would be best to report reduced test
> cases against top of tree.
>
> We should have some automated infrastructure for finding these too...
>
> John
>
Zhendong & friends generally do that (and reported many bugs :) I
tried that myself,
2017 Oct 14
2
IR Pass Ordering Sensitivity
Hi,
I'm trying to autotune a good sequence of IR optimization passes and I seem to run into segfaults in opt (in LLVM5) with certain pass orderings.
Is this expected behavior? If so, what would be the recommended way of determining pass dependencies so that I can encode them into the tuner?
The test program can be found...
2007 Jul 05
1
[Bug 1332] New: Add ability to set TCP rcvbuf size
...tp://bugzilla.mindrot.org/attachment.cgi?id=1320)
This adds a ReceiveBufferSize option to ssh(1)
For high-BDP connections, it may be necessary to increase the size of
the TCP rcvbuf in order to get good performance. In some cases, this
can be accomplished by adjusting a kernel setting or using an
autotuning
kernel. However, these are not always viable options.
In some cases the TCP rcvbuf must be set to multiple megabytes in order
to accomodate high-latency connections. It's not always practical or
desirable to do this for all connections. And autotuning support
assumes
that a recent Linux ker...
2013 Jan 02
1
ssh / scp slow on 10GBE
...list,
right now SSH Tunnel / scp is reaches just around 76Mb/s on my E5 Xeon
using AES-NI but openssl reaches around 600-700Mb/s using 128aes-cbc cipher.
As far as i understand http://www.psc.edu/index.php/hpn-ssh this is due
to very small buffers in ssh / scp.
Is there any work on this? Like autotuning the buffer size? Are there
plans to integrate the hpn patches?
Greets,
Stefan
2020 Mar 09
2
GSoC - Advanced Heuristics and Machine Learning
Hello again! Previously, I introduced myself as a prospective GSoC student
interested in LLVM. Per Mr. Doerfert suggestion I took a look at two other
projects that he said could interest me due to my ongoing research in
autotuning. The projects are:
Advanced Heuristics for Ordering Compiler Optimization Passes
Machine learning and compiler optimizations: using inter-procedural
analysis to select optimizations
And he was right! Now, what are the next steps concerning these projects? I
know I have to choose one, but that is...
2016 Dec 22
0
Postdoc Positions - LLVM for High-Performance Computing
...laboratories and
universities, as well as the wider LLVM community, on topics ranging
from GPU register allocation to high-level optimizations of loops and
parallelism constructs. If you have any questions, please send me an
e-mail (hfinkel at anl.gov).
** Requisition 401877 - Optimization and Autotuning for Supercomputing
Compilers **
http://bit.ly/2i7mVLl
Position Description
This is an exciting opportunity to work on the future of compiler
technology for high-performance computing (HPC) with a particular focus
on supporting the world's largest supercomputers as we head toward
exasc...
2016 Jan 07
1
Samba over slow connections
...ack = 1
> ______________________________________________
>
> smb.conf:
>
> socket options = TCP_NODELAY IPTOS_LOWDELAY SO_KEEPALIVE
> max xmit = 32768
If I understand all of these correctly, you're basically cutting down
all TCP buffers to improve TCP session responsiveness (autotuning
settings are already set to 1). Wouldn't this configuration sensibly
decrease throughput for LAN users?
2013 Oct 29
1
[PATCH net-next] virtio_net: migrate mergeable rx buffers to page frag allocators
...s used.
>>
>> Signed-off-by: Michael Dalton <mwdalton at google.com>
>> ---
>
> Signed-off-by: Eric Dumazet <edumazet at google.com>
>
> Daniel & Francesco, this should address the performance problem you
> tried to address with ("tcp: rcvbuf autotuning improvements")
>
> ( http://www.spinics.net/lists/netdev/msg252642.html )
Applied, thanks everyone.
2013 Oct 29
1
[PATCH net-next] virtio_net: migrate mergeable rx buffers to page frag allocators
...s used.
>>
>> Signed-off-by: Michael Dalton <mwdalton at google.com>
>> ---
>
> Signed-off-by: Eric Dumazet <edumazet at google.com>
>
> Daniel & Francesco, this should address the performance problem you
> tried to address with ("tcp: rcvbuf autotuning improvements")
>
> ( http://www.spinics.net/lists/netdev/msg252642.html )
Applied, thanks everyone.
2013 Aug 27
6
Suggest changing dirhash defaults for FreeBSD 9.2.
I have been experimenting with dirhash settings, and have scoured the internet
for other peoples' experience with it.
(I found the performance improvement in compiling has forestalled the need to
add an SSD drive. ;-)
I believe that increasing the following values by 10 would benefit most FreeBSD
users without disadvantage.
vfs.ufs.dirhash_maxmem: 2097152 to 20971520
2005 Nov 01
2
request: add TCP buffer options to rsync CLI?
.... SO_SNDBUF, SO_RCVBUF). That is useful.
But when trying to get high-throughput rsync over
long paths (i.e. large bandwidth*delay product), since the client-side cannot
also set TCP buffers, throughput will be limited.
There are some OS's that are starting to do receive-side buffer-autotuning
(latest Linux, and probably Vista).
But for the rest, I think the most straightforward way to enable
high throughput
would be to also let the client-side make TCP buffer requests.
Request -in-a-nutshell: something like --tcp_sndbuf and --tcp_rcvbuf options
that result in the sa...
2014 Nov 13
1
Slow access from Windows 7 to samba share on CentOS 6.6 after upgrade
...7 gives this problem.
Opening e.g. jpegs and regular plain text files with Irfanview and Notepad++ respectively is just fine.
Pre-CentOS 6.6 opening any file on the samba share from Windows was lightning-fast.
I'm not too sure where to start trouble-shooting. I've tried disabling the TCP autotune on Windows for starters, which a small improvement, but what next?
Hints would be appreciated. Thanks.
--
BW,
Sorin
-----------------------------------------------------------
# Sorin Srbu, Sysadmin
# Uppsala University
# Dept of Medicinal Chemistry
# Div of Org Pharm Chem
# Box 574
# SE-75123...