- Glasgow-haskell-users

freshmeat project listing for The Glasgow Haskell Compiler
by jeff covey 15 Aug '01

15 Aug '01

I'm writing in reference to your project "The Glasgow Haskell Compiler". Since the time you submitted this project to us, freshmeat has adopted a new categorization system which allows much more fine-grained organization of projects. Since your project has never been recategorized under this system, our readers aren't finding your project when they browse through categories where it should be listed. We'd like to ask you to take just a few minutes to recategorize your project. You should delete any categories which begin with "Old Appindex" and add all of the new categories which apply to your project. You can edit your project listing at: http://freshmeat.net/projects/theglasgowhaskellcompiler/ with the "recategorize" function in the menu. While you're there, take a moment to make sure everything else is up-to-date. If you have any problems, please let us know at http://freshmeat.net/contact/. Thanks for listing your project in our database. Sincerely, Jeff Covey

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RE: Release schedule for GHC 5.02
by Julian Seward (Intl Vendor) 14 Aug '01

14 Aug '01

Crashing GHCi? Can you send some details? Have you filed a bug report? GHCi shouldn't crash on any platforms. Pls send more info. The same goes for all users -- if GHC and/or GHCi have crashed/ failed for you and you didn't report a bug, NOW is the time to do so! J | -----Original Message----- | From: Daan Leijen [mailto:daan@cs.uu.nl] | Sent: Tuesday, August 14, 2001 2:12 PM | To: Julian Seward (Intl Vendor); cvs-ghc(a)haskell.org | Cc: glasgow-haskell-users(a)haskell.org | Subject: Re: Release schedule for GHC 5.02 | | | > * Win32: simple one-click-install package. No requirement for | > Cygwin any longer, and you don't need to install any other | > supporting stuff either. | | Yahoo, I love the experimental version (except for the | crashing GHCi) and my windows friends at Utrecht are finally | using GHC now, especially now that the profiler works again :-) | | All the best, | Daan. | |

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Re: Release schedule for GHC 5.02
by Alex Ferguson 14 Aug '01

14 Aug '01

> * Much heroic hacking by Ken Shan to revive the Alpha port. My hero! But you don't mention an Alpha release per se -- is that going to be available elsewhere, binarywise, or is a final version still pending? Or will someone hold my hand while I try a source build? ;-) Cheers, Alex.

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ghc-5.00.2 solaris-bin-dist link problem
by Johannes Waldmann 14 Aug '01

14 Aug '01

I just installed the ghc-5.00.2 binary package for Solaris. When trying to link a program that uses -syslib data, I get this ghc: linking ... /usr/local/lib/gcc-lib/sparc-sun-solaris2.6/3.0/../../../libreadline.so: undefined reference to `tgetnum' /usr/local/lib/gcc-lib/sparc-sun-solaris2.6/3.0/../../../libreadline.so: undefined reference to `tgoto' and a few more. it looks more like a problem with our gcc installation, but still I'd like to know how to fix it effectively (I don't have any root privileges here). Best regards, -- -- Johannes Waldmann ---- http://www.informatik.uni-leipzig.de/~joe/ -- -- joe(a)informatik.uni-leipzig.de -- phone/fax (+49) 341 9732 204/252 --

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RE: Comparsion of Execution Speeds
by Simon Marlow 13 Aug '01

13 Aug '01

> Is anyone aware of publications relating the execution speeds of ghc > compiled haskell programs to say C? > > I have once heard that the difference is about a factor of 10. The difference varies wildly depending on the program. But Doug Bagely's programming language shootout has some interesting figures: http://www.bagley.org/~doug/shootout/ cheers, Simon

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Comparsion of Execution Speeds
by Stephan Reiff-Marganiec 13 Aug '01

13 Aug '01

Hi, Is anyone aware of publications relating the execution speeds of ghc compiled haskell programs to say C? I have once heard that the difference is about a factor of 10. Stephan -- ______________________________________________________________________________ Stephan Reiff-Marganiec e-mail: sreiff(a)dcs.gla.ac.uk Research Assistant / Student tel: + 44 141 339 8855 x 0048 Department of Computing Science fax: + 44 141 330 4913 University of Glasgow 8-17 Lilybank Gardens GLASGOW G12 8RZ, U.K. ______________________________________________________________________________

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RE: --RTS
by Simon Marlow 13 Aug '01

13 Aug '01

> Currently --RTS option for a program compiled with ghc means that > all the following arguments are passed to the program, even if they > are +RTS and -RTS. > > IMHO -- should act like --RTS too. > > Imagine a utility like Unix ls written in Haskell. If someone > invokes it > ls -- "$FILENAME" > he means that "$FILENAME" is a filename. He shouldn't care that it's > written in Haskell and be forced to write > ls --RTS -- "$FILENAME" > as currently. If it's not an option for the program, it's certainly > not an option for its runtime. > > --RTS can be retained in case one really wants to invoke the program > with arguments +RTS (and not -- +RTS). > > > PS. +RTS -h has an out of date description of -M. Done. Simon

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RE: Socket
by Simon Marlow 13 Aug '01

13 Aug '01

> Keith writes: > > | So I imagine if you passed the socket as the first arg > | to Select.hSelect, you'd get what you want. > | SocketPrim.socketToHandle claims to do the required > | conversion. > > Yes, this works. Thanks. > > (BTW, The documentation of "SocketPrim.socketToHandle" > reports the wrong type ("IOMode" argument is missing). > Forwarded to glasgow-haskell-bugs.) Fixed; thanks. Simon

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RE: Memory usage under -O2
by Simon Marlow 13 Aug '01

13 Aug '01

> Heap usage after compiling my program with -O is vastly > different (at least 10x more) than without -O. Why? How > can I prevent this? (other than, of course, not using -O) One possible cause of this is the full-laziness (or almost-full-laziness) transformation that GHC performs when -O is on. If you're up to reading core, then -ddump-simpl or -dverbose-core2core might help you figure out what's going on, after you've narrowed down the culprit with heap profiling. Unfortunately we don't have a way to turn off full-laziness at the moment, aside from patching the compiler. The optimisation pass ordering is specified in main/DriverState.hs, in the function 'buildCoreToDo'. Cheers, Simon

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Memory usage under -O2
by Ken T Takusagawa 10 Aug '01

10 Aug '01

Heap usage after compiling my program with -O is vastly different (at least 10x more) than without -O. Why? How can I prevent this? (other than, of course, not using -O) --ken

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