openHFT Koloboke collections

[Janny]

I can't get how to create a list of, say, longs with Koloboke. It seems that Koloboke only supports Sets (i.e. containers of unique elements). Does anyone know the answer? Thanks.

[Roman Leventov]

Not sure this mailing list is proper place for such questions. Indeed there are no lists, queues, multimaps or anything else, except hash sets and hash maps.

08 Фев 2015 г. 13:38 пользователь "Janny" <winnie...@gmail.com> написал:

I can't get how to create a list of, say, longs with Koloboke. It seems that Koloboke only supports Sets (i.e. containers of unique elements). Does anyone know the answer? Thanks.

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[Martin Thompson]

If discussing implementations that benefit from mechanical sympathy which people can learn from then knock yourselves out :-)

For example, I've a more formal background in algorithm theory and my first maps used prime numbers to reduce clustering but the cost of IDIV instructions (for quotient or remainder) was so much greater than the benefits that I now lean towards powers of 2 in designs these days. Big-O analysis of algorithms can often be more influenced by constants that come from the machine implementations and it is good to make people aware of such facts. For larger data set, i.e. 2GB+, then locality of reference is often a bigger factor than which divide instruction approach is taken.

However we should always caveat that there is no one size fits all. What we do needs to be based on experimental evidence and analysis to understand the model of what is going on. Scientific Method rather than Scientific Management as our agile friends who hate Taylorism would say :-)

[Janny]

Thanks, Roman. Which HFT collection framework you may recommend to store list of primitive longs?

On Sunday, February 8, 2015 at 6:35:14 PM UTC+8, Roman Leventov wrote:

Not sure this mailing list is proper place for such questions. Indeed there are no lists, queues, multimaps or anything else, except hash sets and hash maps.

08 Фев 2015 г. 13:38 пользователь "Janny" <winnie...@gmail.com> написал:

I can't get how to create a list of, say, longs with Koloboke. It seems that Koloboke only supports Sets (i.e. containers of unique elements). Does anyone know the answer? Thanks.

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[Roman Leventov]

See https://groups.google.com/d/msg/mechanical-sympathy/e57-GOx_1mU/KJ5O3pypUt4J Fastutil or GS collections

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[Janny]

Hi Roman, 

Koloboke is quite nice, but you may like to update your collections so people like me we won't need to use two different collections in our project.

On Sunday, February 8, 2015 at 10:04:03 PM UTC+8, Roman Leventov wrote:

See https://groups.google.com/d/msg/mechanical-sympathy/e57-GOx_1mU/KJ5O3pypUt4J Fastutil or GS collections

On 8 February 2015 at 19:32, Janny <winnie...@gmail.com> wrote:

Thanks, Roman. Which HFT collection framework you may recommend to store list of primitive longs?

On Sunday, February 8, 2015 at 6:35:14 PM UTC+8, Roman Leventov wrote:

Not sure this mailing list is proper place for such questions. Indeed there are no lists, queues, multimaps or anything else, except hash sets and hash maps.

08 Фев 2015 г. 13:38 пользователь "Janny" <winnie...@gmail.com> написал:

I can't get how to create a list of, say, longs with Koloboke. It seems that Koloboke only supports Sets (i.e. containers of unique elements). Does anyone know the answer? Thanks.

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