Re: [bitcoin-dev] Bitcoin network simulation testing?

From: Pindar Wong <pindar.wong@gmail•com>
To: Byron Gibson <byron@mirror•co>
Cc: Bitcoin Dev <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] Bitcoin network simulation testing?
Date: Sat, 10 Oct 2015 06:06:47 +0800	[thread overview]
Message-ID: <CAM7BtUohgYcxQ9mixNAP3ja4Et1MOQsOfoXSWfi-pmXNPhridw@mail.gmail.com> (raw)
In-Reply-To: <CAOVG1oOAUKhzYKfYEd20nXSqy0wcn01cO86oxBRutJJpUj9TjQ@mail.gmail.com>

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Byron: I'd be interested to collaborate on this in some fashion.

p.

On Sat, Oct 10, 2015 at 1:11 AM, Byron Gibson via bitcoin-dev <
bitcoin-dev@lists•linuxfoundation.org> wrote:

> Thanks Nina and Andrew, I may have the capability to run a simulator large
> scale on many nodes on AWS/GCE, but am looking to optimize the ROI by
> selecting categories of experiments that benefit from a more controlled
> environment, rather than be invalidated by its divergence/s from livenet.
> But wondering if anyone else has already been doing this, would be nice to
> collaborate.
>
> Byron Gibson
> CoS | http://mirrorx.com/
> https://onename.io/bgibson
> https://keybase.io/byrongibson
>
>
> On Oct 6, 2015 14:00, "Andrew Miller" <amiller@cs•umd.edu> wrote:
>
>> Shadow uses virtual time, entirely decoupled from real time. So while it
>> may slow down your machine, this would not affect the stats collected
>>
>> (although it does make shadow somewhat unpleasant to run, unless you have
>> a fast machine,  compared to abstract simulators that avoid running the
>> actual Bitcoin code).
>> Hi Byron,
>>
>> I've been using shadow a bit-- I think these simulators are important for
>> testing, but Shadow, at least, certainly seems to have limitations, in some
>> crucial respects.  Running shadow w Tor (which is only logical, because
>> many BCT transactions transpire over Tor) is not as 'light' as presented
>> and slows my own box down quite a bit, so the stats can't possibly be
>> accurate... I don't know if this answers any questions or if you've had
>> this experience at all -- perhaps it is negligible on a more powerful
>> machine than my own-- or perhaps there is an adjustment still unaccounted?
>>
>> Regards,
>> Nina K
>>
>> Sent from my iPhone
>>
>> On Oct 4, 2015, at 2:04 PM, Byron Gibson via bitcoin-dev <
>> bitcoin-dev@lists•linuxfoundation.org> wrote:
>>
>> Hi all, is anyone using simulators like Shadow (https://shadow.github.io),
>> BTCSim (https://github.com/btcsuite/btcsim), etc. to test proposed
>> changes to Bitcoin?  I have a few questions about their capabilities and
>> limitations.
>>
>> Byron Gibson
>> http://mirror.co/
>> https://keybase.io/byrongibson
>>
>>
>>
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