UPC++

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UPC++ is a C++ library that supports Partitioned Global Address Space (PGAS) programming, including APIs for RMA and RPC.

The software and documentation are available for download at https://upcxx.lbl.gov

This group is a public user forum for UPC++, anyone can join and participate!

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mark lori, NDACAN2

Jun 9

Interest in Receiving Future Updates and Communications

Your request (22088) has been received by NDACAN and is being reviewed by our staff. To add

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Interest in Receiving Future Updates and Communications

Your request (22088) has been received by NDACAN and is being reviewed by our staff. To add

Jun 9

Dan Bonachea

May 21

CFP: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X (with SC26)

***************************************************************** Call for Papers PAW-ATM 2026:

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CFP: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X (with SC26)

***************************************************************** Call for Papers PAW-ATM 2026:

May 21

Dan Bonachea

10/20/25

Call for Participation: Parallel Applications Workshop, Alternatives To MPI+X (PAW-ATM25, colocated with SC25)

Workshop website: https://go.lbl.gov/paw Alternatives to MPI+X are worth exploring as programmer

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Call for Participation: Parallel Applications Workshop, Alternatives To MPI+X (PAW-ATM25, colocated with SC25)

Workshop website: https://go.lbl.gov/paw Alternatives to MPI+X are worth exploring as programmer

10/20/25

Dan Bonachea2

7/21/25

CFP: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X (with SC25)

The PAW-ATM submission deadline has been extended to July 31st. *************************************

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CFP: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X (with SC25)

The PAW-ATM submission deadline has been extended to July 31st. *************************************

7/21/25

Marta Cerruti, Paul H. Hargrove2

2/6/25

problems with tests

Marta, On Perlmutter we have installed UPC++ in a public location. To access that install, 'ml

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problems with tests

Marta, On Perlmutter we have installed UPC++ in a public location. To access that install, 'ml

2/6/25

Dan Bonachea

10/31/24

Parallel Applications Workshop, Alternatives To MPI+X at SC24

https://go.lbl.gov/paw-atm Alternatives to MPI+X are worth exploring as programmer productivity

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Parallel Applications Workshop, Alternatives To MPI+X at SC24

https://go.lbl.gov/paw-atm Alternatives to MPI+X are worth exploring as programmer productivity

10/31/24

Dan Bonachea

7/22/24

[CFP Extended Deadline July 31]: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X (with SC24)

The PAW-ATM submissions deadline has been extended to July 31st! Apologies if you get multiple copies

unread,

[CFP Extended Deadline July 31]: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X (with SC24)

The PAW-ATM submissions deadline has been extended to July 31st! Apologies if you get multiple copies

7/22/24

Dan Bonachea

4/1/24

Call for Papers: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X

**************************************************************** Call for Papers PAW-ATM 2024:

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Call for Papers: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X

**************************************************************** Call for Papers PAW-ATM 2024:

4/1/24

Aditya Bandla, Paul H. Hargrove3

3/1/24

failed to link against CUDA Driver API

Thanks, Paul! I did try using the flags, but it still failed with the same error. The output of

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failed to link against CUDA Driver API

Thanks, Paul! I did try using the flags, but it still failed with the same error. The output of

3/1/24

Paul H. Hargrove

12/15/23

UPC++ 2023.9.0 Release Announcement

The Pagoda project at Lawrence Berkeley National Laboratory is proud to announce the release of UPC++

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UPC++ 2023.9.0 Release Announcement

The Pagoda project at Lawrence Berkeley National Laboratory is proud to announce the release of UPC++

12/15/23

Paul H. Hargrove

10/11/23

Pagoda project presence at SC23

The Pagoda team at LBNL are proudly presenting in a number of events at the International Conference

unread,

Pagoda project presence at SC23

The Pagoda team at LBNL are proudly presenting in a number of events at the International Conference

10/11/23

Dan Bonachea

10/2/23

(CALL FOR PARTICIPATION) PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X

https://go.lbl.gov/paw Alternatives to MPI+X are worth exploring as programmer productivity becomes a

unread,

(CALL FOR PARTICIPATION) PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X

https://go.lbl.gov/paw Alternatives to MPI+X are worth exploring as programmer productivity becomes a

10/2/23

Dan Bonachea

7/19/23

[CFP Extended Deadline July 31]: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X (with SC23)

Apologies if you receive multiple copies of this notice. The PAW-ATM23 submission deadline has been

unread,

[CFP Extended Deadline July 31]: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X (with SC23)

Apologies if you receive multiple copies of this notice. The PAW-ATM23 submission deadline has been

7/19/23

Paul H. Hargrove2

7/14/23

Fwd: [upc-users] Environment variables ?

Tore, The answer to your first question about InfiniBand interfaces is relatively simple: The `

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Fwd: [upc-users] Environment variables ?

Tore, The answer to your first question about InfiniBand interfaces is relatively simple: The `

7/14/23

Esmail Abdul Fattah, Julian Bellavita2

7/12/23

Running Sparse Solvers!

Hi there. Are you trying to set up symPACK in a program separate from the provided driver in driver/

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Running Sparse Solvers!

Hi there. Are you trying to set up symPACK in a program separate from the provided driver in driver/

7/12/23

Dan Bonachea

7/12/23

UPC++ Support Slack Workspace

Hello UPC++ users! I'm writing to announce that we've created a new public Slack workspace

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UPC++ Support Slack Workspace

Hello UPC++ users! I'm writing to announce that we've created a new public Slack workspace

7/12/23

Dan Bonachea

7/6/23

Virtual Tutorial: Introduction to HPC with Chapel, UPC++ and Coarray Fortran

************************************************************************** Virtual Tutorial:

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Virtual Tutorial: Introduction to HPC with Chapel, UPC++ and Coarray Fortran

************************************************************************** Virtual Tutorial:

7/6/23

Dan Bonachea2

6/5/23

Call for Papers: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X

**************************************************************** Call for Papers PAW-ATM 2023:

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Call for Papers: PAW-ATM: Parallel Applications Workshop, Alternatives To MPI+X

**************************************************************** Call for Papers PAW-ATM 2023:

6/5/23

Paul H. Hargrove

3/30/23

UPC++ 2023.3.0 Release Announcement

The Pagoda project at Lawrence Berkeley National Laboratory is proud to announce the release of UPC++

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UPC++ 2023.3.0 Release Announcement

The Pagoda project at Lawrence Berkeley National Laboratory is proud to announce the release of UPC++

3/30/23

Paul H. Hargrove

3/10/23

UPC++ "Serialization Streams" working group draft

Dear UPC++ User, Based on past feedback from the community, we have drafted a proposal for

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UPC++ "Serialization Streams" working group draft

Dear UPC++ User, Based on past feedback from the community, we have drafted a proposal for

3/10/23

Paul H. Hargrove2

2/14/23

UPC++ Users Interactive Webinar, Thu Feb 16

UPC++ Users, This is a reminder of a "UPC++ Users BoF" (Birds of a Feather) session to be

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UPC++ Users Interactive Webinar, Thu Feb 16

UPC++ Users, This is a reminder of a "UPC++ Users BoF" (Birds of a Feather) session to be

2/14/23

Kirtus Leyba, Dan Bonachea2

1/12/23

UPC++ Memory Issue with GPU Device Allocator

Hi Kirtus - Thanks for the great question! Each upcxx::device_allocator<upcxx::cuda_device>

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UPC++ Memory Issue with GPU Device Allocator

Hi Kirtus - Thanks for the great question! Each upcxx::device_allocator<upcxx::cuda_device>

1/12/23

Kevin T., Dan Bonachea5

12/16/22

Correct Way To Copy Between Processes?

Hi Kevin - Your explanation makes sense, and I apologize for the confusion. The upcxx::dist_object

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Correct Way To Copy Between Processes?

Hi Kevin - Your explanation makes sense, and I apologize for the confusion. The upcxx::dist_object

12/16/22

Paul H. Hargrove

12/16/22

UPC++ BOF Call for Panelists

I am writing to solicit panelists for a 90-minute UPC++ Birds of a Feather (BOF) session to be held

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UPC++ BOF Call for Panelists

I am writing to solicit panelists for a 90-minute UPC++ Birds of a Feather (BOF) session to be held

12/16/22

Kirtus Leyba, Dan Bonachea3

11/15/22

Non-contiguous copy with memory kinds

Wow that is a very helpful response. Yes this is for the SIMCoV project. I'll look through your

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Non-contiguous copy with memory kinds

Wow that is a very helpful response. Yes this is for the SIMCoV project. I'll look through your

11/15/22

Paul H. Hargrove

11/11/22

Pagoda project presence at SC22

The Pagoda team at LBNL are proudly presenting in a number of events at the International Conference

unread,

Pagoda project presence at SC22

The Pagoda team at LBNL are proudly presenting in a number of events at the International Conference

11/11/22

Paul H. Hargrove

10/4/22

UPC++ 2022.9.0 Release Announcement

The Pagoda project at Lawrence Berkeley National Laboratory is proud to announce the release of UPC++

unread,

UPC++ 2022.9.0 Release Announcement

The Pagoda project at Lawrence Berkeley National Laboratory is proud to announce the release of UPC++

10/4/22

Kirtus Leyba, … Dan Bonachea12

9/3/22

Arizona State University UPC++ Build Questions

Well I launched this run as a batch job so it seems like that works anyway. Alright, thanks a lot for

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Arizona State University UPC++ Build Questions

Well I launched this run as a batch job so it seems like that works anyway. Alright, thanks a lot for

9/3/22

Soonni, Dan Bonachea8

8/20/22

upcxx-run fails during SLURM batch-job (No such file or directory)

On Sat, Aug 20, 2022 at 4:14 PM Soonni <son...@hotmail.de> wrote: Hi Dan, unfortunately, the

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upcxx-run fails during SLURM batch-job (No such file or directory)

On Sat, Aug 20, 2022 at 4:14 PM Soonni <son...@hotmail.de> wrote: Hi Dan, unfortunately, the

8/20/22

C, Paul H. Hargrove3

7/15/22

hard coded gcc paths in UPC++ configuration?

Ok, Thanks. I was afraid this was just a fact of life, but if there was some better way to handle the

unread,

hard coded gcc paths in UPC++ configuration?

Ok, Thanks. I was afraid this was just a fact of life, but if there was some better way to handle the

7/15/22