# Presentation: 423192

## Wireless Visible Humans

*Assistant Professor*
*Director, University of Michigan Visible Human Project**** ***
**University of Michigan Medical School**
*Interim Director, Michigan Center for Biological Information*
**Office of the University Vice President for Research**

*Presented by***Brian D. Athey**

**June 25, 2001**

- vhp.med.umich.edu

**Thomas J. Hacker**
*Systems Project Coordinator*
*UM Center for Parallel Computing*

**Stuart M. Pomerantz**
*Advanced Graphics Programmer*
*Pittsburgh Supercomputing Center*

## The Evolving Amphitheater of 

**Human Anatomy**

## Introduction to Grid Computing: 

**Introduction to Grid Computing: **
**2010 “Global Brain”**

*Courtesy NASA*

## VH Client-Server Application Environment(s)

**VH Client-Server Application Environment(s)**

**Servers**

**Application: NLM Visible Human**

**Client Tools**

## Prototype NGI/I-2 Visible Human Collaboratory

**Prototype NGI/I-2 Visible Human Collaboratory**
**For Medical Education and Training **

**Abilene Network**

## This Morning: Four Parallel VH Streams—Memory-to-Memory Transfer (UMich to Ames)

## Emergent Problem:  Networking “End-to-End”

**Users Connect to Lab/Clinic Networks (802.11b wireless-- --11 Mbit/s)**
**Lab Networks Connect to Phone Closets (LANs)**
**LANs Connect to Building Routers**
**Building Routers Connect to Institutional Backbones**
**Institutional Backbones Connect to ISPs, NOCs, and PoPs**
**ISPs, NOCs, POPs Connect to Regional and National   **
**  ****Backbones ****	****	**** !!**
**!!**
**!!**
**!!**
**ISPs, NOCs, POPs Connect to Regional and National**
**  ****Backbones **
**Institutional Backbones Connect to ISPs, NOCs, and PoPs**
**Building Routers Connect to Institutional Backbones**
**PSC Compaq ES-40, 1 Gbit/s Ethernet**

## UMich VHP Server at PSC

## Web100: Poorly Tuned Host

## Web100: Well Tuned Host

## Data Compression 1

- Art Wetzel (PSC)
- Hierarchical wavelet decomposition similar to the methods of Sweldens
- Supporting dynamic arbitrary orientation and scale navigation by protecting the user from NETWORK LATENCY and especially its variations.
- We strive to have enough local data to provide quick reduced resolution display even for rapid movement and fill in higher res as the network permits.

## Data Compression 2

- Fast machines on slow networks can use more aggressive compression.
- Slower machines on fast networks are better off with minimal and simpler compression.
- This is because of the compute cost of extreme compression.

## UMich Visible Human Project Distributed Application Demonstrations

- Platforms
- LINUX:  **Edgewarp** Volume Navigation, Comparison, and Statistics Software Package
- Cross-Platform:  **PSC Volume Browser**
- Hardware
- Client: PC and Mac Laptop(s) with Enhanced Graphics
- Server: Compaq ES-40 with 1Gbit/s at PSC
- Network--Heterogeneous
- High Bandwidth
- Wireless (802.11b)
- Collaboration with **Web100 Project** to tune the application and network infrastructure to deliver requirements.
- Working with SDSC Storage Resource Broker to investigate use for storing and retrieving anatomical data sets.

## Let’s try a Live Group Demo

- Log onto _[www.psc.edu/~smp/files](http://www.psc.edu/~smp/files)_ (For Macintosh OS-X, Win-98, Win-2000).
- Download the PSC volume browser:  Double click on the file name in browser, then double-click **vb** on your desktop.
- Enjoy.