3 ms·

How does the pricing compare with say X amount of tasks that run for 1 second each compared to what you could expect from 1 hour on a medium ec2 instance? EDIT

How does the pricing compare with say X amount of tasks that run for 1 second each compared to what you could expect from 1 hour on a medium ec2 instance? EDIT: I see it offers "The Lambda free tier includes 1M free requests per month and 400,000 GB-seconds of compute time per month. " What is a GB-second ;)

ranman 11y ago
Re: pricing -- good question I'm going going to test that. Re: gigabyte seconds: It's how much memory (RAM) you're using: 128mb RAM (lowest possible value) for 10s == 1 GB/s 1gb RAM for 1s == 1 GB/s I think it's a pretty clever way to (somewhat) directly correlate compute cost with power (energy). If you remember what John McCarthy said when he imagined that computing would be a public utility one day (http://www.technologyreview.com/news/425623/the-cloud-imperative/ http://www.technologyreview.com/news/425623/the-cloud-impera...) I think this is about as close to that as we're going to get for a little while.
- codewithcheese 11y ago
  Thanks I get it now, nice reference :)
- CMCDragonkai 11y ago
  Doesn't this terminology come from power utilities where a kilowatt hour is kW.h. as in kilowatt × hour. Not kilowatt / hour. So why is a GB second, a GB / second and not GB × second?
  - ranman 11y ago
    It is a GB x second -- I've just seen it written more commonly as GB/s. I think we need a better abbrv for it... gBs?
    - CMCDragonkai 11y ago
      Then it should be GB.s or GBs. GB/s gives a different meaning. For example I could use 600 GB in the first second, then 400 GB in the second second. All together its 1000 GB.s, at an average of 500 GB/s for 2 seconds. This is not perfect because kilowatt is a rate so kWh is a quantity. But GB is already a quantity. So a GB.s doesn't make sense either. It would need to be an equivalent memory rate usage × time in order to get memory quantity. Like avg GB/s × s.
      - jsjohnst 11y ago
        > This is not perfect because kilowatt is a rate so kWh is a quantity. You're a bit mixed up there. Kilowatt is a quantity (unit of energy), kWh is the rate.
- jsjohnst 11y ago
  Minor quibble, but still important: 128 * 10 != 1024. Eight seconds @ 128mb is the equivalent value to using 1gb for a second.

ranman 11y ago

Re: pricing -- good question I'm going going to test that. Re: gigabyte seconds: It's how much memory (RAM) you're using: 128mb RAM (lowest possible value) for 10s == 1 GB/s 1gb RAM for 1s == 1 GB/s I think it's a pretty clever way to (somewhat) directly correlate compute cost with power (energy). If you remember what John McCarthy said when he imagined that computing would be a public utility one day (http://www.technologyreview.com/news/425623/the-cloud-imperative/ http://www.technologyreview.com/news/425623/the-cloud-impera...) I think this is about as close to that as we're going to get for a little while.

codewithcheese 11y ago
Thanks I get it now, nice reference :)
CMCDragonkai 11y ago
Doesn't this terminology come from power utilities where a kilowatt hour is kW.h. as in kilowatt × hour. Not kilowatt / hour. So why is a GB second, a GB / second and not GB × second?
- ranman 11y ago
  It is a GB x second -- I've just seen it written more commonly as GB/s. I think we need a better abbrv for it... gBs?
  - CMCDragonkai 11y ago
    Then it should be GB.s or GBs. GB/s gives a different meaning. For example I could use 600 GB in the first second, then 400 GB in the second second. All together its 1000 GB.s, at an average of 500 GB/s for 2 seconds. This is not perfect because kilowatt is a rate so kWh is a quantity. But GB is already a quantity. So a GB.s doesn't make sense either. It would need to be an equivalent memory rate usage × time in order to get memory quantity. Like avg GB/s × s.
    - jsjohnst 11y ago
      > This is not perfect because kilowatt is a rate so kWh is a quantity. You're a bit mixed up there. Kilowatt is a quantity (unit of energy), kWh is the rate.
jsjohnst 11y ago
Minor quibble, but still important: 128 * 10 != 1024. Eight seconds @ 128mb is the equivalent value to using 1gb for a second.