IBM Says It Swamps Rivals in Key UNIX Computer Test  NEW YORK (Reuters) - IBM &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=IBM.N qtype=sym infotype=info qcat=news"&gt;IBM.N&lt;/A&gt; said on Thursday its  workhorse commercial computers have smashed the industry's most  demanding tests, which analysts said creates a performance gap  that could put further pressure on Hewlett-Packard &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=HPQ.N qtype=sym infotype=info qcat=news"&gt;HPQ.N&lt;/A&gt; or  Sun Microsystems &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=SUNW.O qtype=sym infotype=info qcat=news"&gt;SUNW.O&lt;/A&gt; to recalibrate their strategies.