Thanks! Yes, we found an ES that wasn’t freed. Matthieu From: Iwasaki, Shintaro <[email protected]> Date: Wednesday, 21 July 2021 at 14:47 To: [email protected] <[email protected]>, ZHE WANG <[email protected]> Cc: Dorier, Matthieu <[email protected]> Subject: Re: Assertion failing in ABT_Finalize Hi Mathieu, Thanks for your question. It looks that this happens because some execution streams are not freed before calling ABT_finalize(). Before ABT_finalize(), the user needs to free all execution streams (except for the primary execution stream: an execution stream that calls the first ABT_init()) by ABT_xstream_free(). Thanks, Shintaro ________________________________ From: Dorier, Matthieu via discuss <[email protected]> Sent: Wednesday, July 21, 2021 3:44 AM To: [email protected] <[email protected]>; ZHE WANG <[email protected]> Cc: Dorier, Matthieu <[email protected]> Subject: [argobots-discuss] Assertion failing in ABT_Finalize Hi, In a program we are hitting this assertion: https://github.com/pmodels/argobots/blob/main/src/global.c#L346 This happens when we try to finalize Argobots. Any idea what could be causing it? Thanks, Matthieu