From: Warren <ve3wwg@gmail.com>
Subject: Re: Ada parallelism (was: Re: Threadpool with priority version 1.1 ...)
Date: Wed, 24 Mar 2010 20:04:18 +0000 (UTC)
Date: 2010-03-24T20:04:18+00:00 [thread overview]
Message-ID: <Xns9D45A37BFD4DFWarrensBlatherings@188.40.43.245> (raw)
In-Reply-To: 4baa5987$0$6762$9b4e6d93@newsspool3.arcor-online.net
Georg Bauhaus expounded in news:4baa5987$0$6762$9b4e6d93
@newsspool3.arcor-online.net:
> Warren schrieb:
>> Georg Bauhaus expounded in news:4baa27f2$0$6770$9b4e6d93
>> @newsspool3.arcor-online.net:
>>
>>> Dmitry A. Kazakov schrieb:
>>>> how the proposed algorithms map onto the
>>>> Ada tasking model, especially taking into account that Ada tasking
>>>> primitives are higher level, than ones known in other languages.
>
>>> As a side note: it seems anything but easy to explain
>>> the idea of a concurrent language, not a library, and
>>> not CAS things either, as the means to support the programmer
>>> who wishes to express concurrency.
>>> Concurrency is not seen as one of the modes of expression
>>> in language X. Rather, concurrency is seen as an effect
>>> of interweaving concurrency primitives and some algorithm.
>>>
>>> What can one do about this?
>>
>> I thought the Cilk project was rather interesting in
>> their attempt to make C (and C++) more parallel
>> to take advantage of multi-core cpus. But the language
>> still requires that the programmer program the parallel
>> aspects of the code with some simple language enhancements.
>>
>> As cores eventually move to 128+-way cores, this needs
>> to change to take full advantage of shortened elapsed
>> times, obviously. I think this might require a radical
>> new high-level language to do it.
>
> Or efficient multicore Ada will have to go radically back to
> the roots ;-)
I do believe that an Ada compiler probably has enough
internal info to manage something along this line. Some
work would also have to be done to deal with explicitly
coded tasking.
> How did they achieve efficient execution on
> massively parallel processors? HPF? Occam? What do Sisal
> implementations do?
I don't know about them, but if any of them are "interpreted",
then there would be execution time semantics possible.
Warren
next prev parent reply other threads:[~2010-03-24 20:04 UTC|newest]
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2010-03-24 14:55 ` Threadpool with priority version 1.1 Georg Bauhaus
2010-03-24 16:40 ` Warren
2010-03-24 18:27 ` Ada parallelism (was: Re: Threadpool with priority version 1.1 ...) Georg Bauhaus
2010-03-24 20:04 ` Warren [this message]
2010-03-25 8:24 ` Ada parallelism Dmitry A. Kazakov
2010-03-25 13:44 ` Robert A Duff
2010-03-25 14:09 ` Dmitry A. Kazakov
2010-03-24 21:46 ` Threadpool with priority version 1.1 Maciej Sobczak
2010-03-25 17:21 ` Warren
2010-03-25 17:30 ` Warren
2010-03-26 8:19 ` Dmitry A. Kazakov
2010-03-26 9:30 ` Maciej Sobczak
2010-03-26 19:35 ` Warren
2010-03-25 8:39 ` Dmitry A. Kazakov
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