From rhaas at phas.ubc.ca  Wed Nov  5 11:04:31 2025
From: rhaas at phas.ubc.ca (Roland Haas)
Date: Wed, 5 Nov 2025 12:04:31 -0500
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
In-Reply-To: <20251031170949.6616acc9@fdea4908>
References: <69028232.Uq5vtU6aREeOi+Cb%carpetx-developers@einsteintoolkit.org>
 <20251031170949.6616acc9@fdea4908>
Message-ID: <20251105120431.35b96757@fdea4908>

Hello all,

By request, Liwei's presentation has been postponed until next week.

Sorry for the late notice.

Yours,
Roland

> Hello all,
> 
> The next semi-formal presentation for the CarpetX developer's talks
> will be Liwei Ji presenting on subcycling in time work and status of
> porting codes.
> 
> Thu Nov 6th, 2025
> https://github.com/EinsteinToolkit/CarpetX/wiki/subcycling
> 
> Yours,
> Roland
> 
> > [CAUTION: Non-UBC Email]
> > 
> > Title: CarpetX developer call
> > When: 11am Thursday Eastern time
> > 
> > ** DAYLIGHT SAVING TIME WARNING **
> > Please note that the US / EU has already / not yet transitioned to /
> > from daylight saving time. The phone call will be at 16 Central EU
> > time.
> > 
> > Join Zoom Meeting: 
> > https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
> >  
> > Meeting ID: 660 3319 6685 
> > Passcode: 542384
> > _______________________________________________
> > Carpetx-developers mailing list
> > Carpetx-developers at einsteintoolkit.org
> > http://lists.einsteintoolkit.org/mailman/listinfo/carpetx-developers
> >   
> 
> 


Yours,
Roland

-- 
My email is as private as my paper mail. I therefore support encrypting
and signing email messages. Get my PGP key from http://pgp.mit.edu .

From jiliwei.phys at gmail.com  Wed Nov  5 15:21:32 2025
From: jiliwei.phys at gmail.com (Liwei Ji)
Date: Wed, 5 Nov 2025 16:21:32 -0500
Subject: [Carpetx-developers] Fwd: Prolongation in CarpetX
References: <LV8PR16MB5984F3CE43A2C6BA31913136D7C5A@LV8PR16MB5984.namprd16.prod.outlook.com>
Message-ID: <D97D2523-E2F1-424C-9BD0-BAE3457CAF36@gmail.com>



> Begin forwarded message:
> 
> From: Michail Chabanov <micsma at rit.edu>
> Subject: Re: Prolongation in CarpetX
> Date: November 5, 2025 at 15:24:11 EST
> To: Liwei Ji <ljsma at rit.edu>, "Kalinani, Jay" <jkalinan at illinois.edu>
> Cc: Erik Schnetter <eschnetter at perimeterinstitute.ca>, Roland Haas <rhaas at mail.ubc.ca>, Manuela Campanelli <mxcsma at rit.edu>, "Witek, Helvi" <hwitek at illinois.edu>, Yosef Zlochower <yrzsma at rit.edu>, "Allen Wen (RIT Student)" <acw6923 at rit.edu>
> 
> Dear all,
> 
> this is just a friendly reminder about the changed presentation for tomorrow and a thank you for allowing me to talk about some of the refinement boundary issues that we have for the binary black hole accretion simulations instead. Thanks especially to Liwei who planned to talk about SC before.
> 
> I am very grateful for all of your input tomorrow on the progress we had so far and the problems that still remain ?
> 
> Best,
> Michi
> From: Liwei Ji <ljsma at rit.edu>
> Sent: Friday, October 31, 2025 5:01 PM
> To: Kalinani, Jay <jkalinan at illinois.edu>
> Cc: Erik Schnetter <eschnetter at perimeterinstitute.ca>; Roland Haas <rhaas at mail.ubc.ca>; Manuela Campanelli <mxcsma at rit.edu>; Witek, Helvi <hwitek at illinois.edu>; Michail Chabanov <micsma at rit.edu>
> Subject: Re: Prolongation in CarpetX
>  
> It would be really helpful if you can merge it to the main branch.
> 
> Regards,
> Liwei
> 
>> On Oct 30, 2025, at 13:39, Kalinani, Jay <jkalinan at illinois.edu> wrote:
>> 
>> Dear Erik, Roland,
>>  
>> Hope you are doing well.
>> I wanted to follow up on our discussions in today?s CarpetX call.
>> As you mentioned, there was some development related to improvising the prolongation operators in CarpetX.
>>  
>> Could you kindly give us some update about this (this is also for people in cc who were not in today's call)? 
>> 
>> Also, if there are any new operators implemented that we could test, that would be quite useful for us. Let us know.
>> 
>> We would be very grateful for your input. 
>> 
>> Thank you very much!
>> Kind regards,
>> Jay

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From carpetx-developers at einsteintoolkit.org  Wed Nov  5 16:08:02 2025
From: carpetx-developers at einsteintoolkit.org (carpetx-developers at einsteintoolkit.org)
Date: Wed, 05 Nov 2025 16:08:02 -0600
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
Message-ID: <690bcac2.bHhCjN6BpyZhflLg%carpetx-developers@einsteintoolkit.org>

Title: CarpetX developer call
When: 11am Thursday Eastern time

Join Zoom Meeting: 
https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
 
Meeting ID: 660 3319 6685 
Passcode: 542384

From micsma at rit.edu  Wed Nov  5 14:53:58 2025
From: micsma at rit.edu (Michail Chabanov)
Date: Wed, 5 Nov 2025 20:53:58 +0000
Subject: [Carpetx-developers] Presentation tomorrow
Message-ID: <LV8PR16MB59840C1B2F70A21BFCD6C6B2D7C5A@LV8PR16MB5984.namprd16.prod.outlook.com>

Dear CarpetX Developers,

my name is Michi and I am working on AsterX at RIT trying to simulate GRMHD accretion onto binary black holes. Liwei agreed kindly to give me his spot at the CarpetX call tomorrow to talk about a few issues that we are facing regarding refinement level boundaries.

I just wanted to briefly announce that and say thank you. Of course, all of your input would be greatly appreciated ? I will prepare some slides, but I hope we can have an informal discussion.

Kind regards,
Michi
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From rhaas at mail.ubc.ca  Mon Nov 10 13:15:28 2025
From: rhaas at mail.ubc.ca (Roland Haas)
Date: Mon, 10 Nov 2025 11:15:28 -0800
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
In-Reply-To: <690bcac2.bHhCjN6BpyZhflLg%carpetx-developers@einsteintoolkit.org>
References: <690bcac2.bHhCjN6BpyZhflLg%carpetx-developers@einsteintoolkit.org>
Message-ID: <20251110111450.00630009@haengie2.phas.ubc.ca>

Hello all,

Liwei's presentation on subcycling continues to be postponed due to a
desire to discuss more urgent issues.

Picking up the discussion from 2 weeks ago items and new items for the
agenda this week are:

* Monte Carlo updates (weaklib) [Liwei]
* M1 updates, time integrator scheduling in CarpetX [Jay, Allen]
* AsterX updates on higher-order spatial updates, if ready [Allen]
* CanudaX updates, unexpected convergence order issue [Cheng-Hsin,
  Lucas]
* multipatch updates, interpolator, waveform extraction [Lucas]
* PunctureTrackerX issues [Lucas, Liwei]
* concurrent GPU streams for independent calculations, synchronize()
  calls [Roland]
* optimizations for GPU code for the Einstein Equations [Liwei]

Continuing last week's discussion on prolongation lead by Michail:

* CarpetX now features a reworked setup to chose per-group prolongation
  operators / orders
* benefit of circulation preserving operators (new ones or the ones
  already implemented)

Yours,
Roland

> Title: CarpetX developer call
> When: 11am Thursday Eastern time
> 
> Join Zoom Meeting: 
> https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
>  
> Meeting ID: 660 3319 6685 
> Passcode: 542384


-- 
My email is as private as my paper mail. I therefore support encrypting
and signing email messages. Get my PGP key from http://pgp.mit.edu .

From carpetx-developers at einsteintoolkit.org  Wed Nov 12 16:08:02 2025
From: carpetx-developers at einsteintoolkit.org (carpetx-developers at einsteintoolkit.org)
Date: Wed, 12 Nov 2025 16:08:02 -0600
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
Message-ID: <69150542.yp2arAdSQLq/bCu7%carpetx-developers@einsteintoolkit.org>

Title: CarpetX developer call
When: 11am Thursday Eastern time

Join Zoom Meeting: 
https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
 
Meeting ID: 660 3319 6685 
Passcode: 542384

From rhaas at mail.ubc.ca  Thu Nov 13 09:42:46 2025
From: rhaas at mail.ubc.ca (Roland Haas)
Date: Thu, 13 Nov 2025 07:42:46 -0800
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
In-Reply-To: <69150542.yp2arAdSQLq/bCu7%carpetx-developers@einsteintoolkit.org>
References: <69150542.yp2arAdSQLq/bCu7%carpetx-developers@einsteintoolkit.org>
Message-ID: <20251113074246.27597357@haengie2.phas.ubc.ca>

Hello all,

Reminder of today's agenda:

Liwei's presentation on subcycling continues to be postponed due to a
desire to discuss more urgent issues.

Picking up the discussion from 2 weeks ago items and new items for the
agenda this week are:

* Monte Carlo updates (weaklib) [Liwei]
* M1 updates, time integrator scheduling in CarpetX [Jay, Allen]
* AsterX updates on higher-order spatial updates, if ready [Allen]
* CanudaX updates, unexpected convergence order issue [Cheng-Hsin,
  Lucas]
* multipatch updates, interpolator, waveform extraction [Lucas]
* PunctureTrackerX issues [Lucas, Liwei]
* concurrent GPU streams for independent calculations, synchronize()
  calls [Roland]
* optimizations for GPU code for the Einstein Equations [Liwei]

Continuing last week's discussion on prolongation lead by Michail:

* CarpetX now features a reworked setup to chose per-group prolongation
  operators / orders
* benefit of circulation preserving operators (new ones or the ones
  already implemented)

> [CAUTION: Non-UBC Email]
> 
> Title: CarpetX developer call
> When: 11am Thursday Eastern time
> 
> Join Zoom Meeting: 
> https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
>  
> Meeting ID: 660 3319 6685 
> Passcode: 542384
> _______________________________________________
> Carpetx-developers mailing list
> Carpetx-developers at einsteintoolkit.org
> http://lists.einsteintoolkit.org/mailman/listinfo/carpetx-developers
> 


Yours,
Roland

-- 
My email is as private as my paper mail. I therefore support encrypting
and signing email messages. Get my PGP key from http://pgp.mit.edu .

From carpetx-developers at einsteintoolkit.org  Wed Nov 19 16:08:02 2025
From: carpetx-developers at einsteintoolkit.org (carpetx-developers at einsteintoolkit.org)
Date: Wed, 19 Nov 2025 16:08:02 -0600
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
Message-ID: <691e3fc2.uJnUEX6q0WIkEMiY%carpetx-developers@einsteintoolkit.org>

Title: CarpetX developer call
When: 11am Thursday Eastern time

Join Zoom Meeting: 
https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
 
Meeting ID: 660 3319 6685 
Passcode: 542384

From rhaas at mail.ubc.ca  Fri Nov 21 10:01:13 2025
From: rhaas at mail.ubc.ca (Roland Haas)
Date: Fri, 21 Nov 2025 08:01:13 -0800
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
In-Reply-To: <691e3fc2.uJnUEX6q0WIkEMiY%carpetx-developers@einsteintoolkit.org>
References: <691e3fc2.uJnUEX6q0WIkEMiY%carpetx-developers@einsteintoolkit.org>
Message-ID: <20251121080113.28d2344a@haengie2.phas.ubc.ca>

Hello all,

A recording for Liweis's presentation is now available online at:

https://github.com/EinsteinToolkit/CarpetX/wiki/Subcycling#presentation-recordings

Yours,
Roland

> [CAUTION: Non-UBC Email]
> 
> Title: CarpetX developer call
> When: 11am Thursday Eastern time
> 
> Join Zoom Meeting: 
> https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
>  
> Meeting ID: 660 3319 6685 
> Passcode: 542384
> _______________________________________________
> Carpetx-developers mailing list
> Carpetx-developers at einsteintoolkit.org
> http://lists.einsteintoolkit.org/mailman/listinfo/carpetx-developers
> 

-- 
My email is as private as my paper mail. I therefore support encrypting
and signing email messages. Get my PGP key from http://pgp.mit.edu .

From roland.haas at ubc.ca  Mon Nov 24 11:40:39 2025
From: roland.haas at ubc.ca (Haas, Roland)
Date: Mon, 24 Nov 2025 17:40:39 +0000
Subject: [Carpetx-developers] Canceled: CarpetX call
Message-ID: <YQXPR01MB5239E4DF0DFAE53ACD1BBEA48DD0A@YQXPR01MB5239.CANPRD01.PROD.OUTLOOK.COM>

US Thanksgiving
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From rhaas at mail.ubc.ca  Mon Nov 24 11:51:56 2025
From: rhaas at mail.ubc.ca (Roland Haas)
Date: Mon, 24 Nov 2025 09:51:56 -0800
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
In-Reply-To: <691e3fc2.uJnUEX6q0WIkEMiY%carpetx-developers@einsteintoolkit.org>
References: <691e3fc2.uJnUEX6q0WIkEMiY%carpetx-developers@einsteintoolkit.org>
Message-ID: <20251124095156.4fd40e86@haengie2.phas.ubc.ca>

Hello CarpetX World,

We will not have an CarpetX call on US Thanksgiving Day (Nov 27th).

--Roland

> [CAUTION: Non-UBC Email]
> 
> Title: CarpetX developer call
> When: 11am Thursday Eastern time
> 
> Join Zoom Meeting: 
> https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
>  
> Meeting ID: 660 3319 6685 
> Passcode: 542384
> _______________________________________________
> Carpetx-developers mailing list
> Carpetx-developers at einsteintoolkit.org
> http://lists.einsteintoolkit.org/mailman/listinfo/carpetx-developers
> 

-- 
My email is as private as my paper mail. I therefore support encrypting
and signing email messages. Get my PGP key from http://pgp.mit.edu .

From carpetx-developers at einsteintoolkit.org  Wed Nov 26 16:08:03 2025
From: carpetx-developers at einsteintoolkit.org (carpetx-developers at einsteintoolkit.org)
Date: Wed, 26 Nov 2025 16:08:03 -0600
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
Message-ID: <69277a43.nYWfnW2mqyabo8QZ%carpetx-developers@einsteintoolkit.org>

Title: CarpetX developer call
When: 11am Thursday Eastern time

Join Zoom Meeting: 
https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
 
Meeting ID: 660 3319 6685 
Passcode: 542384

From rhaas at mail.ubc.ca  Wed Nov 26 16:27:02 2025
From: rhaas at mail.ubc.ca (Roland Haas)
Date: Wed, 26 Nov 2025 14:27:02 -0800
Subject: [Carpetx-developers] Weekly call at 11am Thursday Eastern time
In-Reply-To: <69277a43.nYWfnW2mqyabo8QZ%carpetx-developers@einsteintoolkit.org>
References: <69277a43.nYWfnW2mqyabo8QZ%carpetx-developers@einsteintoolkit.org>
Message-ID: <20251126142702.63b61c3b@haengie2.phas.ubc.ca>

Hello all,

Nope, just like the Cactus call, we will skip the CarpetX call due to
US thanksgiving.

Sorry about the spam.

Yours,
Roland

> [CAUTION: Non-UBC Email]
> 
> Title: CarpetX developer call
> When: 11am Thursday Eastern time
> 
> Join Zoom Meeting: 
> https://ubc.zoom.us/j/66033196685?pwd=zxXTpcrBY1L7nT2kNFITm71ZuoZEiO.1 
>  
> Meeting ID: 660 3319 6685 
> Passcode: 542384
> _______________________________________________
> Carpetx-developers mailing list
> Carpetx-developers at einsteintoolkit.org
> http://lists.einsteintoolkit.org/mailman/listinfo/carpetx-developers
> 

-- 
My email is as private as my paper mail. I therefore support encrypting
and signing email messages. Get my PGP key from http://pgp.mit.edu .