Are there capacity issues for g4dn instances in eu-west-1?

Question

Hi there,  
I'm building an application that as needed, autoscales a group of g4dn.2xlarge instances to act as GPU workers. Over the last week I've noticed that sometimes it can take over 20 minutes to bring up new instances, even if I'm only requesting 1 or 2. Whilst waiting I get error messages of the following form.  
  
Launching a new EC2 instance. Status Reason: We currently do not have sufficient g4dn.2xlarge capacity in the Availability Zone you requested (eu-west-1a). Our system will be working on provisioning additional capacity. You can currently get g4dn.2xlarge capacity by not specifying an Availability Zone in your request or choosing eu-west-1b, eu-west-1c. Launching EC2 instance failed.  
  
I have not yet looked at making my application work over multiple availability zones as it's still at an early stage and I assume that the networking will be more complicated, but I can see that I need to start giving it some thought. Before I do that though is it possible to get some insight into what is causing these capacity issues? Is there a problem specific to eu-west-1a or will I see similar issues if I try to launch in the other availability zones as well?  
  
Thanks in advance.  
  
Alan

abroun · Answer

Hi Mabandla,  
  
Thank you for the detailed reply. In the first instance I think that I will look at making my application agnostic to the availability zone in which the g4dn instances are running.  
  
I was curious though if you knew if there was anything specific going on with gpu instances in eu-west-1? Over the last couple of days I've had on-demand requests for just 1 g4dn.2xlarge instance take 20-30 minutes to come up multiple times when in the past for single instances I'm sure it's usually only taken a couple of minutes max. I haven't tried any other g4dn instances yet such as the smaller g4dn.xlarge to see if similar issues occur there.  
  
Regards  
  
Alan  
  
Edited by: abroun on Nov 16, 2021 8:58 AM

Are there capacity issues for g4dn instances in eu-west-1?

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