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edwinbrady's profile
Edwin Brady
Edwin Brady
Edwin Brady
@edwinbrady

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Edwin Brady

@edwinbrady

CompSci Lecturer. Go player. Programming language researcher. Idris hacker. Denies knowledge of Whitespace. He/him. http://tinyurl.com/TypeDD 

St Andrews
eb.host.cs.st-andrews.ac.uk
Joined November 2008

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    Edwin Brady‏ @edwinbrady Feb 1
    • Report Tweet
    • Report NetzDG Violation

    Still reasonably confident that Idris 2 is going to be quite a bit faster than Idris 1...pic.twitter.com/XDb4NVUTv3

    Idris 1, checking Core.Context in 50s
    Idris 2, checking Core.Context in 15s
    8:23 AM - 1 Feb 2020
    • 7 Retweets
    • 96 Likes
    • John walker Dimon Lers Alex Sarunas Gabriel Bezerra Matteo Acerbi Jose Luis Abia Elvir Cam ⏐ Τhе Αnⅽⅰеnt Вооеr ⏐
    6 replies 7 retweets 96 likes
      1. Edwin Brady‏ @edwinbrady Feb 1
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        This is still disappointingly slow though. It would help if I knew how to write a decent run time system...

        2 replies 0 retweets 9 likes
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      1. New conversation
      2. Sage‏ @mx00s Feb 1
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        Replying to @edwinbrady

        Do any of these source files get processed concurrently when the dependency graph permits?

        1 reply 0 retweets 1 like
      3. Edwin Brady‏ @edwinbrady Feb 1
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        Replying to @mx00s

        No, Idris 1's runtime gets doubly extra terrible when it tries threading. It would be a good idea otherwise.

        1 reply 0 retweets 2 likes
      4. 2 more replies
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      2. Michael Greenberg‏ @mgrnbrg Feb 1
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        Replying to @edwinbrady

        Nice! Any idea why Idris 2 is spending so much time on system calls?

        1 reply 0 retweets 1 like
      3. Edwin Brady‏ @edwinbrady Feb 1
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        Replying to @mgrnbrg

        I don't know, yet, but it seems like it would be very useful to find out. It does have a very bad allocator. Curiously, profiling suggests one of the biggest costs is parsing, which is hopefully one of the easier things to fix!

        1 reply 0 retweets 1 like
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      2. Sebastian Ullrich‏ @derKha Feb 2
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        Replying to @edwinbrady

        Do you (plan to) support separate compilation? Main thing I actually miss from our C++ implementation...

        1 reply 0 retweets 0 likes
      3. Edwin Brady‏ @edwinbrady Feb 2
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        Replying to @derKha

        It's whole program at the moment, but one reason of many for changing the core to QTT was to make separate compilation possible.

        1 reply 0 retweets 3 likes
      4. 3 more replies
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      2. Joey Eremondi‏ @EremondiJoey Feb 1
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        Replying to @edwinbrady

        Does this mean Idris2 is self hosting now?

        1 reply 0 retweets 1 like
      3. Edwin Brady‏ @edwinbrady Feb 1
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        Replying to @EremondiJoey

        No, only the first 25 files build so far

        0 replies 0 retweets 1 like
      4. End of conversation
      1. Nicu Chiciuc‏ @nicu31 Feb 3
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        Replying to @edwinbrady

        Suppose someone would want to get involved in the developing of the compiler, having not too much experience (http://craftingcompilers.com  reading, a liking for Type systems, and some years of development). What would be some good first steps/learning resources. Asking for a friend :D

        0 replies 0 retweets 1 like
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