[Haskell-cafe] haskell in the cloud

[Alfred Matthews]

Nice.

On Thu, 24 May 2018 at 02:45 Alexander Kjeldaas <
alexander.kjeldaas at gmail.com> wrote:

> On Wed, May 23, 2018 at 11:59 PM, Dennis Raddle <dennis.raddle at gmail.com>
> wrote:
>
>> Thanks, everyone.
>>
>> Billing by the second is good. Billing by the hour is not going to work
>> (that seems to be the Scaleway model).
>>
>
>
> You pay a significant premium for the per second billing.  The
> price-efficient EC2 server is going to be c5.18xlarge
>
> Those are $0.048 / (core*hour).   Compare that to Hetzner Cloud cores,
> also Skylake, which clocks in at $0.0073 / (core*hour).
>
> When you factor in server setup time of 1-3 minutes, then you can only use
> your "ultra-cheap" EC2 machine for a few minutes before it would be cheaper
> to rent the Hetzner server for an hour!
>
> Alexander
>
>
>
>>
>> When I asked this question a while back, I was told that there is a cloud
>> service specifically for Haskell programs. Just wondering if that might be
>> a good fit for me.
>>
>> I probably would benefit the most by running on multiple machines. I'd
>> like to have them coordinate with each other... i.e. one main controller
>> program will initiate and run other programs for a few seconds, then
>> collect the results and start another run.
>>
>> What's the simplest Haskell library to get this going? Cloud Haskell?
>>
>>
>
>
>> D
>>
>>
>>
>> On Wed, May 23, 2018 at 1:24 PM, David Reaver <johndreaver at gmail.com>
>> wrote:
>>
>>> Amazon Web Services has a x1.32xlarge EC2 instance with 128 CPU cores
>>> and just under 2000 GiB of RAM for about $13 per hour. AWS actually has
>>> per-second billing (with a 1 minute minimum) since late last year.
>>>
>>> They have lots of other options as well of course. Here is their pricing
>>> page: https://aws.amazon.com/ec2/pricing/on-demand/
>>>
>>> On Wed, May 23, 2018 at 2:51 AM, Dennis Raddle <dennis.raddle at gmail.com>
>>> wrote:
>>>
>>>> I have a CPU-intensive Haskell application. I have it working with
>>>> simple multi-core concurrency. I'm wondering if I can run this on a cloud
>>>> virtual machine with 128 cores or so, paying by the CPU minute. I'll run it
>>>> for maybe 15 minutes a day so I'm probably best off paying just for the CPU
>>>> used.
>>>>
>>>> What platform would be recommended? For ease of use? For best
>>>> price/performance?
>>>>
>>>> It's a backtracking optimization algorithm that builds data, one
>>>> element at a time. It's not hard at all to make it concurrent: at the first
>>>> 3 or so levels of element choices would be about 100 to 500 combinations.
>>>> Even if the simplest method of running concurrent Haskell on multiple cores
>>>> doesn't work, I could just divide these first cases into batches and run
>>>> them on individual machines.
>>>>
>>>> D
>>>>
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>>>
>>>
>>
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-- 


Alfred.
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