<PAGE> 1
EXHIBIT 23.4
INDEPENDENT AUDITORS' CONSENT
We consent to the use in this Amendment No. 1 to Registration Statement No.
333-45504 of Simplex Solutions, Inc. on Form S-1 of our report dated September
8, 2000 on the financial statements of Altius Solutions, Inc. as of and for the
year ended December 31, 1999, appearing in the Prospectus, which is part of this
Amendment No. 1 to the Registration Statement.
We also consent to the reference to us under the heading "Experts" in such
Prospectus.
/s/ DELOITTE & TOUCHE LLP
San Jose, California
January 8, 2001
