NSF Form 1515 (10/29/02)

Image Permission & Copyright Release Form

For the National Science Foundation

Thank you for submitting your image for use by the National Science Foundation (NSF). This form is to verify that you have given NSF permission to use your image in the manner described here. In view of your rights under U.S. Copyright laws, please check one of the following options and sign below:

Check to Approve External & Internal Use of Image

By checking this option and signing below, you certify that you have granted NSF permission to use the graphics described on a royalty-free basis, to post the image on the NSF Image Library Web site to be made available for use to NSF, the media, universities, teachers, and the general public, and other visitors to the Image Library web site. NSF agrees to post with the image, any restrictions stated on this form that pertain to the use of the image, and encourages users to adhere to these restrictions.

Check to Approve Internal Use Only of Image

By checking this option and signing below, you certify that you have granted NSF permission to use your graphics for internal use only, for NSF speeches, publications and materials—both print and electronic—but may not be reproduced by others without the permission of the owner.

Check to Approve Press Material Use Only

By checking this option and signing below, you certify that you have granted NSF permission to use your graphics for releases, news tips, and other distributed newsroom materials only. However, because our website is publicly accessible, these images will be downloadable. Upon request, NSF will only use limited-resolution versions of your images in these press materials.

I, Mark Jarrell / LSU /

(Print name) (Name of organization)

Understand and agree to the terms of this form where I have indicated.

Signature Date

Information about the Image

NSF strives to provide as much information as possible about each image in the Image Library. On the back of this page, please provide the information requested, including a caption and credit, and any additional information such as the date of the image. If there are any restrictions on the use of this image that you would like to accompany it, please include these as well.

Any information you can provide about the image would be appreciated.

Information About the Image

CAPTION (Please be specific; use a separate sheet of paper for additional space):

Time spent in data communication as a function of the number of computer nodes (12 processors per node). For large data sets each process sends messages to all the others, and the communication time scales linearly with the number of processes. Latency hiding techniques, that overlap the interprocessor communication with local computations, yields a factor of two speedup when compared with standard message-passing libraries as the number of processors increases beyond 30,000.

CREDIT (Write exactly how you would like the credit line to read):

T.W. Lee (CCT, LSU), J. Ramanujam (ECE/CCT, LSU), M. Jarrell and J. Moreno (Physics/CCT, LSU).

Is this an Image of NSF-Supported Research? Yes _____ No _____

If Yes, please explain and if possible, provide the NSF grant number:

NSF grant EPS-1003897 supports the involvement of JR in this project. Ramanujam is an expert in large tensor contractions and rotations on supercomputers, which lead to this result. JM is also supported by EPS-100389, TWL is supported by the LSU Center for Computation and Technology, and MJ is supported by DOE SciDAC to work on this project.

DATE OF IMAGE (Please narrow date down as close as possible, even if you can only give the decade)

May 2011

RESTRICTIONS FOR USE: (PLEASE NOTE: If there is a restriction to use this image, NSF will gladly include the information. However, since the Image Library is open to the public and NSF does not monitor use of the images, NSF cannot guarantee that people using the site will adhere to restrictions posted. We must assume that people will use the honor system.)