COM SCI M151B
Computer Systems Architecture
Lecture and discussion. The registrar has published a final exam time.
Fall 2026: 1 lecture and 9 discussions. Nothing here is open. The oldest of these readings was 3 hours ago.
Also listed as EC ENGR M116C (open, 165 of 215 enrolled, majors only): the same class, and each department holds its own seats and its own grade history.
Grades
3.05
Average grade awarded in COM SCI M151B. Not a student rating: this is what the grades were.
In the A range
39%
of the 1,042 letter grades
D, F or W
6.7%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
-
the registrar has this letter grade only this term
The registrar's own records: 1,042 grades over 8 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.
What is inside that record
No summer session is in that record.
The table below splits them, and term averages across those 8 terms ran 2.77 to 3.46.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 47 · 4.5%
- A 189 · 18.1%
- A- 173 · 16.6%
- B+ 151 · 14.5%
- B 143 · 13.7%
- B- 106 · 10.2%
- C+ 77 · 7.4%
- C 54 · 5.2%
- C- 32 · 3.1%
- D+ 14 · 1.3%
- D 18 · 1.7%
- D- 11 · 1.1%
- F 27 · 2.6%
- I 11 of 1,053
Percentages are of the 1,042 letter grades. Grey bars are non-letter outcomes: incompletes (I).
How the non-letter outcomes are counted
They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.
By instructor
| Instructor | Predicted GPA | Raw | n | Terms | A range | Workload | Fall 2026 |
|---|---|---|---|---|---|---|---|
| REINMAN, GLENN D reviews ↗ | 2.92 | 2.92 | 561 | 2 | 32% | average | not teaching it |
| TINE, BLAISE reviews ↗ | 3.11 | 3.11 | 247 | 2 | 40% | average | not teaching it |
| TAMIR, YUVAL reviews ↗ | 3.30 | 3.32 | 234 | 4 | 56% | heavy | not teaching it |
Why Predicted is not the Raw average
“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.
Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.
Workload and assignments
Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.
What the work looks like
- Exams mentioned, no number given, said by 12 reviewers
- Quizzes mentioned, no number given, said by 9 reviewers
- Projects mentioned, no number given, said by 4 reviewers
Read from 60 reviews 17 days ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.
What comes first
The chain dibs can see is 3 courses long before COM SCI M151B. dibs has read a class page for every course in it.
Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.
In Falls
Has not run in Fall in the 4 Falls dibs holds records for, back to Winter 2022. That is 4 years of grade records rather than the course catalog, so it says what has happened and not what the department will do next.
From the terms dibs holds, which start in Fall 2021 and exclude summer. A department can run a course in a quarter it never has before.
From the registrar's catalog
(Same as Electrical and Computer Engineering M116C.) Lecture, four hours; discussion, two hours; outside study, six hours. Enforced requisites: courses 33, and M51A or Electrical and Computer Engineering M16. Recommended: courses 111, and M152A or Electrical and Computer Engineering M116L. Computer system organization and design, implementation of CPU datapath and control, instruction set design, memory hierarchy (caches, main memory, virtual memory) organization and management, input/output subsystems (bus structures, interrupts, DMA), performance evaluation, pipelined processors. Letter grading.
Sections in Fall 2026
You enroll in the discussion, not the lecture, so a discussion's status is the one that decides whether you get in. A lecture can read open while every discussion under it is full.
Seat counts as of : the oldest of these 10 readings. Seat readings are snapshots, not live availability. Their timestamps show when dibs last checked.
-
Lec 1 TR 6:00pm-7:50pmClosed by the department
Gupta, P.
3.06predicted, all instructors · 1,042 gradesno enrollment count published no history
9 discussions, none open. There is no waitlist either, so the only way in is somebody dropping the lecture.
This limit is on the class, so it applies to all 9 discussions below.
Every discussion, with its time and seats (9)
-
Dis 1A
W 12:00pm-1:50pm · Boelter Hall 5419
Closed by the departmentno enrollment count published
-
Dis 1B
F 12:00pm-1:50pm · Boelter Hall 5272
Closed by the departmentno enrollment count published
-
Dis 1C
F 2:00pm-3:50pm · Boelter Hall 5272
Closed by the departmentno enrollment count published
-
Dis 1D
F 4:00pm-5:50pm · Boelter Hall 5272
Closed by the departmentno enrollment count published
-
Dis 1E
W 2:00pm-3:50pm · Boelter Hall 5440
Closed by the departmentno enrollment count published
-
Dis 1F
W 4:00pm-5:50pm · Boelter Hall 5422
Closed by the departmentno enrollment count published
-
Dis 1G
R 4:00pm-5:50pm · Boelter Hall 5273
Closed by the departmentno enrollment count published
-
Dis 1H
F 10:00am-11:50am
Closed by the departmentno enrollment count published
-
Dis 1I
R 4:00pm-5:50pm · Boelter Hall 5422
Closed by the departmentno enrollment count published
-
Final enrollment, averaged across each term's sections: between 45 and 380 a term over 8 terms, summer excluded, most recently 67 in Spring 2025. That is the shape across years, not this term, which is above.
From the people who took it
Student reviews
What taking COM SCI M151B was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.
Looking for more perspectives?
External reviews are separate and do not count toward the dibs rating.
Seats over time in Fall 2026
How each lecture has filled since dibs first saw it.
A dot is a reading where something moved: the seat count, the status, or the waitlist.
What a flat run means, and where a line starts
Flat between dots means it did not drift, it held and then jumped, and a line starts when dibs first saw that lecture rather than reaching back before it existed. A lecture that has never moved draws a flat line across the whole window, and one with two or three readings draws a line joining them, which is too few to read a trend from.
Lec 1 · Gupta, P. · -
Unchanged over about 1 month
Both readings say 0 seats.
How readings and alerts work
A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.
Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.
The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.