IMO, true invalid results should not receive credit. you shouldn't be rewarded for providing incorrect results, regardless of time spent.

now if we're talking false invalids that are really still useful but only marked invalid for the validator being too strict, then I'm on the fence, it's up to the project to make the call. but a truely wrong result? no credit should be given. it promotes types of cheating where someone manipulates the application or calculation to make it run faster, but providing incorrect results. I agree with Richard, that tie-breakers should be employed here to see which is the true result. and they really need to allow cross validation between device types. having nvidia/nvidia, amd/amd, intel/intel always paired up is asking for trouble with application or device type that produces consistently invalid results, but they match so that validator would mark them both correct.

Invalid results should not get credits.
I don't want to be thanked with credits, I want a fairly accurate accounting of the valid results I've done that can be compared across WCG projects.

Users who do not have an automated script running to request high-credit tasks every 2 minutes are barely impacted by running an invalid work unit for several minutes once every few days.

There is a big difference between an Invalid where you are the only one to return the unit as Invalid and the many case where all the copies are returned as Invalid. In the first scenario, you are deemed to be at fault and you should not get credits. In the second scenario, you should not be deemed to be at fault and should get credits.

Mike

Well like I said. No other project pays for invalids. WCG shouldn’t either. If they decide they want to be nice and give some credits, more power to them. But they shouldn’t in any way be pressured or guilted into it by the users who think their time is more important than correct results.

Invalid tasks have been here in the past, too. It's nothing new.
See this post from 2013 by knreed, e.g., to quote:

Even when OPNG tasks aren't included, there are cases nowadays:

Pages: 2
workunit 627670627
Project Name: OpenPandemics - COVID 19
Created: 04/19/2021 20:24:21
Name: OPN1_0042653_01142
Minimum Quorum: 2
Replication: 3
OPN1_0042653_01142_3--   Linux          717   Server Aborted         4/25/21 07:00:08    4/25/21 14:22:50    0.00       0.0 / 0.0
OPN1_0042653_01142_2--   Linux Ubuntu   717   Valid                  4/25/21 07:00:06    4/25/21 11:29:33    1.28       68.2 / 72.7
OPN1_0042653_01142_1--   Linux openSU   717   Valid                  4/21/21 20:08:03    4/25/21 06:59:30    2.11       77.2 / 72.7
OPN1_0042653_01142_0--   Red Hat Ente   717   Invalid                4/21/21 20:07:14    4/24/21 16:59:06    3.63       67.0 / 67.0

workunit 627670620
Project Name: OpenPandemics - COVID 19
Created: 04/19/2021 20:24:21
Name: OPN1_0042653_01043
Minimum Quorum: 2
Replication: 3
OPN1_0042653_01043_3--   Linux openSU   717   Server Aborted         4/25/21 07:00:08    4/25/21 11:16:26    0.00       0.0 / 0.0
OPN1_0042653_01043_2--   Linux Ubuntu   717   Valid                  4/25/21 07:00:06    4/25/21 09:47:24    1.39       73.5 / 76.1
OPN1_0042653_01043_1--   Linux openSU   717   Valid                  4/21/21 20:08:03    4/25/21 06:59:30    2.19       78.7 / 76.1
OPN1_0042653_01043_0--   Red Hat Ente   717   Invalid                4/21/21 20:07:14    4/24/21 16:59:06    3.79       69.8 / 69.8

workunit 627672005
Project Name: OpenPandemics - COVID 19
Created: 04/19/2021 20:24:26
Name: OPN1_0042716_00458
Minimum Quorum: 2
Replication: 3
OPN1_0042716_00458_3--   Linux Ubuntu   717   Valid                  4/25/21 07:00:06    4/25/21 09:47:24    1.40       73.9 / 76.0
OPN1_0042716_00458_2--   Linux Fedora   717   Server Aborted         4/25/21 07:00:05    4/25/21 09:52:14    0.00       0.0 / 0.0
OPN1_0042716_00458_1--   Linux openSU   717   Valid                  4/21/21 20:08:03    4/25/21 06:59:30    2.20       78.1 / 76.0
OPN1_0042716_00458_0--   Red Hat Ente   717   Invalid                4/21/21 20:07:14    4/24/21 16:59:06    3.86       71.1 / 71.1