[Cbc] [External] Re: 2.10 version on Ubuntu

Sun Sep 22 13:29:36 EDT 2019

We would really need to know more specifics, such as where you downloaded
from and exactly how you built Cbc in CYGWIN. In general, CYGWIN is no
longer a recommended option for building. WSL and MSys2 are much better
options for building these days.

Ted

On Sun, Sep 22, 2019 at 1:07 PM Yoram Zilberberg <yoram at one1.co.il> wrote:

> Yes.  I run under windows
>
> I have two version
>
> One I doenloaded
> One I compiled under cygwin
>
> Both do not work
>
>
>
>
>
> Zilberberg Yoram
> Chief Architect
> One1
>
>
>
> -------- Original message --------
> From: Ted Ralphs <ted at lehigh.edu>
> Date: 9/22/19 20:06 (GMT+02:00)
> To: Yoram Zilberberg <yoram at one1.co.il>
> Cc: Naladimmu Sreelakshmi <naladimmu.sreelakshmi at fractal.ai>, cbc <
> cbc at list.coin-or.org>
> Subject: Re: [Cbc] [External] Re: 2.10 version on Ubuntu
>
> If your binary is .exe, I assume you are not building in Ubuntu? It would
> be best if you opened an issue for this.
>
> Cheers,
>
> Ted
>
> On Sun, Sep 22, 2019 at 4:18 AM Yoram Zilberberg <yoram at one1.co.il> wrote:
>
>> I have tried with 128 threads. I run for 10 hours (I have seen the
>> cbc.exe running (single thread) the whole time.
>> So I killed it.
>>
>> for me – it did not work (different behaviour then < 100, but still not
>> working)
>>
>>
>>
>>
>>
>> *From:* Cbc <cbc-bounces at coin-or.org> *On Behalf Of *Naladimmu
>> Sreelakshmi
>> *Sent:* Thursday, 19 September 2019 11:36
>> *To:* Ted Ralphs <ted at lehigh.edu>
>> *Cc:* cbc <cbc at list.coin-or.org>
>> *Subject:* Re: [Cbc] [External] Re: 2.10 version on Ubuntu
>>
>>
>>
>> Understood! 100+n gives me same result on every iteration.
>>
>>
>>
>> The difference in performance is not too drastic too, it takes 26 minutes
>> for a problem of ~43,000 variables with 116 threads as against 24 minutes
>> when threads is just 16.
>>
>>
>>
>> Thanks
>>
>> Sree
>> ------------------------------
>>
>> *From:* Ted Ralphs <ted at lehigh.edu>
>> *Sent:* 19 September 2019 00:18
>> *To:* Naladimmu Sreelakshmi <naladimmu.sreelakshmi at fractal.ai>
>> *Cc:* JP Fasano <jpfasano at gmail.com>; cbc <cbc at list.coin-or.org>
>> *Subject:* Re: [External] Re: [Cbc] 2.10 version on Ubuntu
>>
>>
>>
>> The parallelism is non-deterministic by default. Determinism makes the
>> parallelism a little less efficient, so non-determinism is usually
>> preferred unless there is a reason it's unacceptable. To get deterministic
>> parallel, you need to set the number of threads to 100+n, e.g., 104. I
>> know, it's weird and not well-documented :).
>>
>>
>>
>> I just installed the Ubuntu package and it behaves the same way. I get
>> nondeterminism if I set the threads to something < 100.
>>
>>
>>
>> Ted
>>
>>
>>
>> On Wed, Sep 18, 2019 at 12:28 PM Naladimmu Sreelakshmi <
>> naladimmu.sreelakshmi at fractal.ai> wrote:
>>
>> Hi Ted,
>>
>>
>>
>> While running using multiple threads (compiled using
>> enable-cbc-parallel), have noticed that the result changes slightly on
>> repetitions. Have not observed this if I were to use the binary files
>> instead.
>>
>>
>>
>> Want to understand why the convergence changes while using multiple
>> threads.
>>
>>
>>
>> I am using below options while running cbc:
>>
>> opt.options['threads']=1
>>
>> opt.options['randomC']=1234567
>>
>> opt.options['randomS']=1234567
>>
>> opt.options['ratio']=0.004
>>
>>
>>
>> Thanks,
>>
>> [image: 1518440930887_PastedImage]
>>
>> Sreelakshmi Naladimmu | Senior Consultant
>>
>> +91 9176264380 | fractal.ai
>>
>> [image: 1518428993160_PastedImage]
>> ------------------------------
>>
>> *From:* Ted Ralphs <ted at lehigh.edu>
>> *Sent:* 15 September 2019 21:46
>> *To:* JP Fasano <jpfasano at gmail.com>
>> *Cc:* Naladimmu Sreelakshmi <naladimmu.sreelakshmi at fractal.ai>; cbc <
>> cbc at list.coin-or.org>
>> *Subject:* Re: [External] Re: [Cbc] 2.10 version on Ubuntu
>>
>>
>>
>> Yes, the uninstall should be done as sudo if the installation directory
>> is not writable by the user. I now added a check and it will automatically
>> prompt you for a sudo password if you forget to run it as sudo and this is
>> needed. The same is actually true for the install, so there is technically
>> no need to run anything as sudo.
>>
>>
>>
>> I've detected a few more bugs for some uncommon edge cases, so better do
>> an update. I hope it will be stable soon and then I will start making
>> releases and do enhancements in separate feature branches so it's not such
>> a moving target.
>>
>>
>>
>> Cheers,
>>
>>
>>
>> Ted
>>
>>
>>
>> On Sun, Sep 15, 2019 at 7:04 AM JP Fasano <jpfasano at gmail.com> wrote:
>>
>> Ted,
>>
>> Should the uninstall be done with sudo?
>>
>> *sudo* ./coinbrew Cbc uninstall
>>
>> If uninstall only removes the local files in the build directory, then
>> leaving out sudo should be OK,
>>
>> but I suspect uninstall also removes the files in /usr/local which should
>> require sudo.
>>
>>
>>
>> Thank you for doing all this work.
>>
>> It is really helpful and appreciated.
>>
>>
>>
>> JP
>>
>>
>>
>> On Sat, Sep 14, 2019 at 10:43 PM Ted Ralphs <ted at lehigh.edu> wrote:
>>
>> OK, it took a little digging, but I got everything fixed up and added a
>> few more enhancements to coinbrew in the meantime. The errors similar to
>>
>>
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/harp2': Permission
>> denied
>>
>>
>>
>> during the build step were due to an embarassing bug that has now been
>> fixed. The build should not need to be be run with sudo by design---that is
>> the reason for separating the build and install steps.
>>
>>
>>
>> As for the install, I was able to replicate what you saw. As far as I can
>> tell, you most likely did successfully in installing the release version
>> (despite Cbc's version message), but when Cbc was built, it seems to have
>> pulled in the configuration header file from the previously installed
>> master version and the wrong version string got injected into the code. I'm
>> still verifying this, but in any case, it was almost certainly some sort of
>> corruption due to the previous install.
>>
>>
>>
>> This possibility never occurred to me, so thanks once again for the
>> detailed reports! I have an idea how to fix it, but it may take a little
>> work.
>>
>>
>>
>> In general, it's best to uninstall one version before starting to build
>> and install another. Just run
>>
>>
>>
>> ./coinbrew Cbc uninstall
>>
>>
>>
>> With what I think happened, you should actually now be able to simply
>> re-build and re-install Cbc itself (no need to rebuild the dependencies)
>> and it will be fixed. I add the option now to rebuild a  project, so you
>> should in principle be able to do
>>
>>
>>
>> ./coinbrew build --rebuild Cbc --skip-dependencies
>>
>>
>>
>> and it will rebuild. However, since I also just changed that way build
>> configurations are cached (sorry for the moving target), I would actually
>> suggest that you reconfigure and rebuild everything with
>>
>>
>>
>> ./coinbrew build --rebuild --reconfigure Cbc --prefix=/usr/local
>>
>>
>>
>> Alternatively, you can also just remove the build directory altogether
>> with "rm -rf build". After you rebuild, you can install again and
>> everything should be fixed up.
>>
>>
>>
>> Cheers,
>>
>>
>>
>> Ted
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Fri, Sep 13, 2019 at 9:07 PM JP Fasano <jpfasano at gmail.com> wrote:
>>
>> I tried a fresh checkout of the latest released code and the build seemed
>> to work, but didn't.
>>
>> I did:
>>
>> ·         wget
>> https://raw.githubusercontent.com/coin-or/coinbrew/master/coinbrew
>>
>> ·         chmod +x coinbrew
>>
>> ·         ./coinbrew fetch Cbc:releases/2.10.3 --no-prompt
>> >fetchConsole.log 2>&1
>>
>> ·         ./coinbrew build Cbc --no-prompt --prefix=/usr/local
>> >buildConsole.log 2>&1
>>
>> ·         sudo ./coinbrew install Cbc  >installConsole.log 2>&1
>>
>> When I run cbc, I see
>>
>> jpfasano at WitOpenSource:~/coinCbc$ cbc
>>
>> Welcome to the CBC MILP Solver
>>
>> Version: Trunk (unstable)
>>
>> Build Date: Sep 13 2019
>>
>>
>>
>> CoinSolver takes input from arguments ( - switches to stdin)
>>
>> Enter ? for list of commands or help
>>
>> Coin:
>>
>> Notice that the version is Trunk (unstable).
>>
>> So the released version of cbc didn't get installed.
>>
>>
>>
>> The last lines of the buildConsole.log look suspicious:
>>
>> jpfasano at WitOpenSource:~/coinCbc$ tail buildConsole.log
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/harp2': Permission
>> denied
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/vpm1': Permission
>> denied
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/set1ch': Permission
>> denied
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/qnet1_o':
>> Permission denied
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/pk1': Permission
>> denied
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/misc03': Permission
>> denied
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/fixnet6':
>> Permission denied
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/gen': Permission
>> denied
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/mitre': Permission
>> denied
>>
>> rm: cannot remove '/usr/local/share/coin/Data/miplib3/rout': Permission
>> denied
>>
>> Perhaps "./coinbrew build" needs to be run with sudo?
>>
>>
>>
>> Here are links to the console logs:
>>
>> ·         fetch: link
>> <https://1drv.ms/u/s!ArBmlTcrk72FoL1xP8WgHK50ARsLTQ?e=OEkV7M>
>>
>> ·         build: link
>> <https://1drv.ms/u/s!ArBmlTcrk72FoL1ynKuLKJWe9Vzldw?e=cYyXr5>
>>
>> ·         install: link
>> <https://1drv.ms/u/s!ArBmlTcrk72FoL1wM48QUYfsbZNDRg?e=hU2jkV>
>>
>>
>>
>>
>> --
>>
>> Dr. Ted Ralphs
>> Professor, Industrial and Systems Engineering
>> Lehigh University
>> (610) 628-1280
>> ted 'at' lehigh 'dot' edu
>> coral.ie.lehigh.edu/~ted
>>
>>
>>
>>
>> --
>>
>> Dr. Ted Ralphs
>> Professor, Industrial and Systems Engineering
>> Lehigh University
>> (610) 628-1280
>> ted 'at' lehigh 'dot' edu
>> coral.ie.lehigh.edu/~ted
>>
>>
>>
>>
>> ------------------------------
>>
>> This message contains information that may be privileged or confidential
>> and is the property of the Fractal Analytics. It is intended only for the
>> person to whom it is addressed. Access to this e-mail by anyone else is
>> unauthorized. If you are not the intended recipient, you are not authorized
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>> ------------------------------
>>
>>
>>
>>
>>
>>
>> --
>>
>> Dr. Ted Ralphs
>> Professor, Industrial and Systems Engineering
>> Lehigh University
>> (610) 628-1280
>> ted 'at' lehigh 'dot' edu
>> coral.ie.lehigh.edu/~ted
>>
>>
>>
>>
>> ------------------------------
>>
>> This message contains information that may be privileged or confidential
>> and is the property of the Fractal Analytics. It is intended only for the
>> person to whom it is addressed. Access to this e-mail by anyone else is
>> unauthorized. If you are not the intended recipient, you are not authorized
>> to read, print, retain, copy, disseminate, distribute, or use this message
>> or any part thereof. If you receive this message in error, please notify
>> the sender immediately and delete all copies of this message.
>> ------------------------------
>>
>>
>>
>
>
> --
> Dr. Ted Ralphs
> Professor, Industrial and Systems Engineering
> Lehigh University
> (610) 628-1280
> ted 'at' lehigh 'dot' edu
> coral.ie.lehigh.edu/~ted
>

-- 
Dr. Ted Ralphs
Professor, Industrial and Systems Engineering
Lehigh University
(610) 628-1280
ted 'at' lehigh 'dot' edu
coral.ie.lehigh.edu/~ted
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