Trac August 2017

trac@lists.einsteintoolkit.org

1 participants
102 discussions

[Einstein Toolkit] #1974: Add WVUThorns_Diagnostics to the ET
by Einstein Toolkit 25 Jan '19

25 Jan '19

#1974: Add WVUThorns_Diagnostics to the ET --------------------------------+------------------------------------------- Reporter: zachetie@… | Owner: Type: enhancement | Status: new Priority: unset | Milestone: Component: Other | Version: development version Keywords: | --------------------------------+------------------------------------------- I have open-sourced a very useful set of diagnostic routines for GRMHD, GRHD, and even vacuum simulations. The thorns are available here: https://bitbucket.org/zach_etienne/wvuthorns_diagnostics Here's a brief description of each thorn: Brief description of included thorns '''Seed_Magnetic_Fields-modified''' Extended Seed_Magnetic_Fields thorn for binary neutron stars. Supercedes Seed_Magnetic_Fields thorn. '''Meudon_Bin_NS-modified''' Modifications to Meudon BNS initial data thorn to disable the overwriting of initial lapse/shift, which acts to significantly reduce coordinate eccentricity. Supercedes Meudon_Bin_NS thorn. '''VolumeIntegrals_GRMHD''' Nice GRMHD volume integration thorn, currently depends on IllinoisGRMHD and Carpet. Performs volume integrals on arbitrary "Swiss-cheese"-like topologies, and even interoperates with Carpet to track NS centers of mass. '''VolumeIntegrals_vacuum''' Nice GRMHD volume integration thorn, currently depends on ML_BSSN. There is a bit of code duplication and duplicated functionality between VI_GRMHD and VI_vacuum, to ensure that VI_vacuum can be used without enabling a GRMHD code. There is probably a better way of doing this, but I haven't had the time to think deeply about this. '''particle_tracerET''' Solves the ODE \partial_t x^i = v^i for typically thousands of tracer particles, using an RK4 integration atop the current timestepping. E.g., one RK4 substep in the particle integration might occur every 16 RK4 substeps in the GRMHD evolution. These tracer particle positions are quite useful for visualizing magnetic field lines in a consistent way from frame-to-frame in a movie (recall that in the GRMHD approximation, the magnetic field lines stay attached the fluid elements they thread ["Flux Freezing"]). Note that the velocity must be consistent with the velocity appearing in the GRMHD induction equation. This thorn reads in the HydroBase vel[] vector gridfunction, which assumes the Valencia formalism, and converts it into the induction equation velocity. '''smallbPoynET''' Computes b^i^, b^2^, and three spatial components of Poynting flux. It also computes (-1-u,,0,,), which is useful for tracking unbound matter. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1974> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1718: MemSpeed: Re-use allocated memory
by Einstein Toolkit 23 Jan '19

23 Jan '19

#1718: MemSpeed: Re-use allocated memory -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: | -----------------------------------+---------------------------------------- Allocating memory is slow. In thorn MemSpeed, we should re-use memory that has been allocated instead of allocating new memory for each benchmark. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1718> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #331: SimFactory does not abort if it has been given a nonexistent optionlist
by Einstein Toolkit 13 Dec '18

13 Dec '18

#331: SimFactory does not abort if it has been given a nonexistent optionlist ------------------------+--------------------------------------------------- Reporter: hinder | Owner: mthomas Type: defect | Status: new Priority: major | Milestone: Component: SimFactory | Version: Keywords: | ------------------------+--------------------------------------------------- If I specify a nonexistent optionlist in a machine's .ini file, I get the warning Info: optionlist is: None Warning: no option list specified, using blank option list This is incorrect. I have specified an optionlist, but it has not been found, which indicates an error. In this case I would expect a fatal error. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/331> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #2059: SimFactory should detect the number of cores automatically
by Einstein Toolkit 13 Dec '18

13 Dec '18

#2059: SimFactory should detect the number of cores automatically -------------------------+-------------------------------------------------- Reporter: hinder | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: SimFactory | Version: development version Keywords: | -------------------------+-------------------------------------------------- SimFactory should detect the number of cores automatically. See pull request by Mikael Sahrling: https://bitbucket.org/simfactory/simfactory2 /pull-requests/20/simdtpy-detect-number-of-cpus/diff. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/2059> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #228: Make it easier for users to create accounts on TRAC
by Einstein Toolkit 12 Dec '18

12 Dec '18

#228: Make it easier for users to create accounts on TRAC ----------------------------------+----------------------------------------- Reporter: hinder | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: EinsteinToolkit trac | Version: Keywords: | ----------------------------------+----------------------------------------- Currently, in order to interact fully with TRAC, it is necessary to have a CCT account. I would prefer that all potential users of the ET/Cactus TRAC could create accounts. This way, it would be possible for all bug reporters to be notified of changes to the tickets they create, and makes it more likely that they will respond to requests for further information and confirmations of fixes. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/228> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #270: Need web instructions for building on a new machine
by Einstein Toolkit 12 Dec '18

12 Dec '18

#270: Need web instructions for building on a new machine -------------------------------------+-------------------------------------- Reporter: eschnett | Owner: Type: defect | Status: new Priority: major | Milestone: Component: EinsteinToolkit website | Version: Keywords: | -------------------------------------+-------------------------------------- We should have instructions on the web that explain how to build the Einstein Toolkit on a new machine, i.e. a machine for which we don't have a SimFactory entry already. This seems to be a fairly common case for new users, who rather want to build on their own machine instead of on Queen Bee. This should probably concentrate on configuring Cactus first, i.e. on configuring SimFactory for building a configuration. Job submission etc. should come later. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/270> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1804: Provide an Einstein Toolkit User Guide
by Einstein Toolkit 12 Dec '18

12 Dec '18

#1804: Provide an Einstein Toolkit User Guide -------------------------+-------------------------------------------------- Reporter: hinder | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: Other | Version: development version Keywords: | -------------------------+-------------------------------------------------- We currently have documentation for individual thorns, but there is no documentation for the toolkit as a whole, describing how best to accomplish certain tasks. The [http://arxiv.org/abs/1111.3344 Einstein Toolkit paper] is a good starting point, but it is a static document, and is not quite at the level of documentation. I propose to take the paper and convert it into a user guide for the ET. It should not replicate detailed information already available in thorn documentation (rather it should link to it), but should provide a high level overview. It should also contain best practices for working with the ET. This would be the first point of reference for new users of the toolkit. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1804> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #2046: list of ET members out of date
by Einstein Toolkit 27 Nov '18

27 Nov '18

#2046: list of ET members out of date -------------------------------------+-------------------------------------- Reporter: rhaas | Owner: Type: defect | Status: new Priority: minor | Milestone: Component: EinsteinToolkit website | Version: development version Keywords: | -------------------------------------+-------------------------------------- The current list of ET members on http://einsteintoolkit.org/members.html is out of date (mostly I guess because there is no way to update one's information). Eg looking at http://einsteintoolkit.org/members.html Charalampos Markakis would be at Southampton (he has been at NCSA since 2016), Philipp Moesta would be at Caltech (he has been in Berkeley for a couple years now). Tanja Bode is no longer at Tuebingen but at UCSC etc etc. My suggestion would be to contact all persons listed for their current institution and remove those that do not respond within a month. For future registration I suggest that we ask for an email address and ping the addresses once a year, removing stale ones. We should also include a paragraph to contact maintainers(a)einsteintoolkit.org to update ones affiliation in any email send out along with the registration. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/2046> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #2069: connection failures to svn.cactuscode.org
by Einstein Toolkit 20 Nov '18

20 Nov '18

#2069: connection failures to svn.cactuscode.org -------------------------------------+-------------------------------------- Reporter: rhaas | Owner: Type: defect | Status: new Priority: blocker | Milestone: Component: EinsteinToolkit website | Version: development version Keywords: SSL | -------------------------------------+-------------------------------------- I am getting connection failures to svn.cactuscode.org using svn 1.9.7 on Debian buster (which is starting to phase out tls 1.0 and 1.1 support https://lists.debian.org/debian-devel-announce/2017/08/msg00004.html). Namely I get: {{{ ET_Hack$ svn checkout https://svn.cactuscode.org/projects/ExternalLibraries/zlib/ svn: E170013: Unable to connect to a repository at URL 'https://svn.cactuscode.org/projects/ExternalLibraries/zlib' svn: E120171: Error running context: An error occurred during SSL communication }}} and openssl shows: {{{ ET_Hack$ openssl s_client -connect svn.cactuscode.org:443 CONNECTED(00000003) 140481992824064:error:14171102:SSL routines:tls_process_server_hello:unsupported protocol:../ssl/statem/statem_clnt.c:917: --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 86 bytes and written 183 bytes Verification: OK --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE No ALPN negotiated SSL-Session: Protocol : TLSv1.2 Cipher : 0000 Session-ID: Session-ID-ctx: Master-Key: PSK identity: None PSK identity hint: None SRP username: None Start Time: 1503529726 Timeout : 7200 (sec) Verify return code: 0 (ok) Extended master secret: no --- }}} systems which still allow tls1.0 (eg the QueenBee login nodes) return {{{ $ openssl s_client -connect svn.cactuscode.org:443 depth=3 C = SE, O = AddTrust AB, OU = AddTrust External TTP Network, CN = AddTrust External CA Root verify return:1 depth=2 C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Network, CN = USERTrust RSA Certification Authority verify return:1 depth=1 C = US, ST = MI, L = Ann Arbor, O = Internet2, OU = InCommon, CN = InCommon RSA Server CA verify return:1 depth=0 C = US, postalCode = 70803, ST = Louisiana, L = Baton Rouge, street = 110 Thomas Boyd, O = Louisiana State University, OU = LSU A & M, CN = svn.cactuscode.org verify return:1 CONNECTED(00000003) --- Certificate chain 0 s:/C=US/postalCode=70803/ST=Louisiana/L=Baton Rouge/street=110 Thomas Boyd/O=Louisiana State University/OU=LSU A & M/CN=svn.cactuscode.org i:/C=US/ST=MI/L=Ann Arbor/O=Internet2/OU=InCommon/CN=InCommon RSA Server CA 1 s:/C=US/ST=MI/L=Ann Arbor/O=Internet2/OU=InCommon/CN=InCommon RSA Server CA i:/C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST Network/CN=USERTrust RSA Certification Authority 2 s:/C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST Network/CN=USERTrust RSA Certification Authority i:/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root --- Server certificate -----BEGIN CERTIFICATE----- MIIGgDCCBWigAwIBAgIQHqWvzUQZraL+FC0Gui4TnTANBgkqhkiG9w0BAQsFADB2 MQswCQYDVQQGEwJVUzELMAkGA1UECBMCTUkxEjAQBgNVBAcTCUFubiBBcmJvcjES MBAGA1UEChMJSW50ZXJuZXQyMREwDwYDVQQLEwhJbkNvbW1vbjEfMB0GA1UEAxMW SW5Db21tb24gUlNBIFNlcnZlciBDQTAeFw0xNTEyMDEwMDAwMDBaFw0xODExMzAy MzU5NTlaMIG3MQswCQYDVQQGEwJVUzEOMAwGA1UEERMFNzA4MDMxEjAQBgNVBAgT CUxvdWlzaWFuYTEUMBIGA1UEBxMLQmF0b24gUm91Z2UxGDAWBgNVBAkTDzExMCBU aG9tYXMgQm95ZDEjMCEGA1UEChMaTG91aXNpYW5hIFN0YXRlIFVuaXZlcnNpdHkx EjAQBgNVBAsMCUxTVSBBICYgTTEbMBkGA1UEAxMSc3ZuLmNhY3R1c2NvZGUub3Jn MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA40EHmQwApNBq6wt6VyZ0 hWbeCpkOkYENmksB9kPtxzVSz0gK26nnPl68wyb3gTLN3qhfkH9rxlPNuQoo9L3q 5WnIAUrPgzz+afP/kXMzeUtD4GdKx4NhSFnOaVE8rimz2EiOAx7BC8uxfT+EOJ3i C07jwSKg8l+1M0SH1BQqjPK8HeVkfAP2jWQVBAThz/TMvs6P9w4yH8aKsUO2DpOw ocRUvEEvYd6cc4ouuJkhCkosw4NUHC5gCuuoJcVo8wuqR1F+aE8qvtG1CKNTkU6M 5QZgPcqQ4ENwM3SJTlSrWIsqebu24NDacmxc32K2CwLeBEQHM5YCKj1UAODAmtZB aBD3w7lVO0odunOWI+E/R9NARSpwyCBBCv43TDPDKp48Nmffaj7nhSRIl4hFxtTW FTC3rkoHL5fuSFWZBNVJDD7iYFsSovDUep9gAAd8szjQQdwdUTIY/ad/xFjS8UX+ Q6myUkLfBDnSQp2lMrDBYmrOBUacwMkFI4gJEyZpWA3RXAZloa8Mmopq8bHthgCN OjMDf7JAsXNo7OP7n3TIe52XVKtaYpK6OVpZelCaY7huYv/5+oZdqk0A4+ij5RBl 4GukstJQcLSErYiyheesAeSBwXMfQch57uhiB/bUL5W5lRE34Ru6gAckTt7E/Uji d9jAJ7K/ISCyp2qn9NDRtycCAwEAAaOCAcYwggHCMB8GA1UdIwQYMBaAFB4Fo3eP bJbiW4dLprSGrHEADOc4MB0GA1UdDgQWBBSuuHX667Gw/EAO8dHJCvbWxYzPHTAO BgNVHQ8BAf8EBAMCBaAwDAYDVR0TAQH/BAIwADAdBgNVHSUEFjAUBggrBgEFBQcD AQYIKwYBBQUHAwIwZwYDVR0gBGAwXjBSBgwrBgEEAa4jAQQDAQEwQjBABggrBgEF BQcCARY0aHR0cHM6Ly93d3cuaW5jb21tb24ub3JnL2NlcnQvcmVwb3NpdG9yeS9j cHNfc3NsLnBkZjAIBgZngQwBAgIwRAYDVR0fBD0wOzA5oDegNYYzaHR0cDovL2Ny bC5pbmNvbW1vbi1yc2Eub3JnL0luQ29tbW9uUlNBU2VydmVyQ0EuY3JsMHUGCCsG AQUFBwEBBGkwZzA+BggrBgEFBQcwAoYyaHR0cDovL2NydC51c2VydHJ1c3QuY29t L0luQ29tbW9uUlNBU2VydmVyQ0FfMi5jcnQwJQYIKwYBBQUHMAGGGWh0dHA6Ly9v Y3NwLnVzZXJ0cnVzdC5jb20wHQYDVR0RBBYwFIISc3ZuLmNhY3R1c2NvZGUub3Jn MA0GCSqGSIb3DQEBCwUAA4IBAQA8RerhAuPvOngiT4cSmhtiFp+r+i4hXzKB3UwU J3mjgrOQz3AxbmW1A9CyMEPAxtAhM1GdPmSR8T/KeGEE5/We5uVO1SvFpSA8BmsC 7vjirkNLVMlrIrDM89uUwJi5m/i7yupqhoxdReuuz4NP8PJqzOWSaU4uSvU98/Jq 1K5m4dsFdB+cW4EnO70Qv3Htl7AZUZHCNhRvbmtilQcAa+wTTYzBtJFiQ/GufDd8 DSMAa4icWq80UDdilikkt4IiMsFyEHJ0R6Jwppf3VnWD2Z+AtM5wEY6/Z4Loy0nn G/yFK5/d8vXprdFI2D3kfEx7YyMldqUwsfeEmu8Lk5bd4zqN -----END CERTIFICATE----- subject=/C=US/postalCode=70803/ST=Louisiana/L=Baton Rouge/street=110 Thomas Boyd/O=Louisiana State University/OU=LSU A & M/CN=svn.cactuscode.org issuer=/C=US/ST=MI/L=Ann Arbor/O=Internet2/OU=InCommon/CN=InCommon RSA Server CA --- No client certificate CA names sent Server Temp Key: DH, 1024 bits --- SSL handshake has read 5565 bytes and written 445 bytes --- New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA Server public key is 4096 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1 Cipher : DHE-RSA-AES256-SHA Session-ID: 02B9ECA6650E99DAB46E41D229C6B6317D5B6649DE5602AAACB85DDA3D4BCB7F Session-ID-ctx: Master-Key: 6A79D044DE035A170C384CFFD2AD5B15B5691D518F04597E9A2BA9ED4A14CE93A18B0AB3D9CF65EC73A913FA7AC364EB Key-Arg : None Krb5 Principal: None PSK identity: None PSK identity hint: None Start Time: 1503529970 Timeout : 300 (sec) Verify return code: 0 (ok) --- DONE }}} and only fail if tls1.2 is forced: {{{ $ openssl s_client -connect svn.cactuscode.org:443 -tls1_2 CONNECTED(00000003) 47690330324936:error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number:s3_pkt.c:339: --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 5 bytes and written 7 bytes --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1.2 Cipher : 0000 Session-ID: Session-ID-ctx: Master-Key: Key-Arg : None Krb5 Principal: None PSK identity: None PSK identity hint: None Start Time: 1503530008 Timeout : 7200 (sec) Verify return code: 0 (ok) --- }}} Is there any chance of having LSU update their webserver so that it offer tls 1.2 (around since August 2008)? Note that chances are that Ubuntu (which branches off from Debian unstable regularly) will pick up this change soon affecting the majority of our new Linux ET users. For Debian this is a blocker since it prevents me from even downloading the code. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/2069> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #2064: Add GiRaFFE to the Einstein Toolkit
by Einstein Toolkit 19 Nov '18

19 Nov '18

#2064: Add GiRaFFE to the Einstein Toolkit -------------------------------------------+-------------------------------- Reporter: zachetie@… | Owner: Type: enhancement | Status: new Priority: unset | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: GiRaFFE, GRFFE, IllinoisGRMHD | -------------------------------------------+-------------------------------- We (the authors of GiRaFFE) hereby request that GiRaFFE be added to the Einstein Toolkit. In short, GiRaFFE is the first open source, dynamical- spacetime code for modeling plasma flows in general relativistic force- free electrodynamics (GRFFE). It will be the best code in the Toolkit for modeling black hole and neutron star magnetospheres, as these magnetically-dominated regions are best modeled numerically by a GRFFE code (GRMHD codes break down when modeling very highly magnetized plasmas). Here is the commit ID for code reviewer comments: https://bitbucket.org/zach_etienne/wvuthorns/commits/ca2aab4ac66b404cddc6a3… Here is the original release announcement to the mailing list, including link to the code release paper: We are pleased to announce the public release of GiRaFFE, an open-source General Relativistic Force-Free Electrodynamics (GRFFE) code for dynamical spacetimes. -= Code Release Paper =- Our code release paper--including a full description of the GiRaFFE code, a discussion of potential applications of GiRaFFE, and code validation test results--has been uploaded to the arXiv: https://arxiv.org/abs/1704.00599 . -= Executive Summary =- GiRaFFE adopts the strategy pioneered by McKinney [1] and modified by Paschalidis and Shapiro [2] to convert a general relativistic magnetohydrodynamic (GRMHD) code into a GRFFE code. In short, GiRaFFE exists as an extensive modification to IllinoisGRMHD [3]. Both GiRaFFE and IllinoisGRMHD leverage the Einstein Toolkit’s highly-scalable infrastructure [4,5] to make possible large-scale simulations of magnetized plasmas in strong, dynamical spacetimes on adaptive-mesh refinement (AMR) grids. As you are aware, IllinoisGRMHD is an open-source rewrite of the Illinois Numerical Relativity Group's GRMHD code. GiRaFFE, on the other hand, is not based on any existing GRFFE code and is designed only to solve the equations of GRFFE in the context of fixed or dynamically-generated spacetimes. GiRaFFE has passed a large suite of GRFFE code validation tests passed by other state-of-the-art GRFFE codes, leading us to conclude that GiRaFFE is now ready for large-scale, state-of-the-art GRFFE simulations in dynamical spacetimes. -= New Thorns for the Einstein Toolkit =- All GiRaFFE thorns are listed below. Next to the name of each thorn, we include the number of lines of code to highlight the fact that GiRaFFE is quite compact and designed to be welcoming to new users. In addition, the comment-to-line-of-code ratio is very nearly 50%, and the code release paper provides a clean, broad-brush overview of the formalism and algorithms adopted. To become acquainted with any given thorn, first take a look at its README file. * GiRaFFE (~1,600 lines of code): Solves the GRFFE equations in the formalism of Paschalidis & Shapiro [2] using the same reconstruction (PPM) and staggered vector potential methods as IllinoisGRMHD. * GiRaFFEfood (~1,300 lines of code): Code validation initial data and basic diagnostics. Contains Five 1D tests in flat spacetime (fast wave, Alfvén wave, degenerate Alfvén wave, "three-wave", FFE breakdown), One 3D test in flat spacetime (aligned rotator), and Three 3D tests in curved spacetimes ("Exact Wald" solution, "Magnetospheric Wald" solution, and split monopole). * ShiftedKerrSchild (~230 lines of code): Sets up all 3+1 quantities for a Kerr-Schild spacetime with an arbitrary radial shift, to mitigate effects of extreme spacetime curvature near r_{KS}=0. See Appendix of code release paper for full discussion. * VolumeIntegrals_slab_Gfood (~310 lines of code): Performs volume integrals over arbitrary rectangular prisms as specified in parameter files. * GiRaFFE_to_HydroBase & ID_converter_GiRaFFE (~230 lines of code): Acts as a translation layer to convert 3-velocities in HydroBase's Valencia formalism to/from the 3-velocity found in the induction equation (v^i = u^i/u^0; native to GiRaFFE). -= License =- To maximize compatibility with existing thorns in ET, all of the aforementioned GiRaFFE thorns are either licensed GPLv2+ or 2-clause BSD (FreeBSD). See LICENSE file in each. -= Download GiRaFFE! =- The collection of thorns comprising GiRaFFE may be downloaded here: https://bitbucket.org/zach_etienne/wvuthorns Sincerely, The GiRaFFE team -Zach Etienne -Mew-Bing Wan -Maria Babiuc -Sean McWilliams -Ashok Choudhary References: [1] J.C. McKinney. Mon. Not. R. Astron. Soc., 367:1797, 2006. [2] V. Paschalidis and S. L. Shapiro. Phys. Rev. D, 88:104031, 2013. [3] Z. B. Etienne, V. Paschalidis, R. Haas, P. M¨osta, and S. L. Shapiro. Class. Quantum Grav., 32(17):175009, 2015. [4] https://einsteintoolkit.org/ [5] https://carpetcode.org/ -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/2064> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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