[Haskell-cafe] haskell in the cloud

[Alexander Kjeldaas]

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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